diff --git a/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitChunk_All.java b/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitChunk_All.java
index 08ff48b5..ace2ac84 100644
--- a/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitChunk_All.java
+++ b/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitChunk_All.java
@@ -31,6 +31,27 @@ public class BukkitChunk_All extends CharFaweChunk<Chunk, BukkitQueue_All> {
         super(parent, x, z);
     }
 
+    public BukkitChunk_All(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_All copy;
+        if (shallow) {
+            copy = new BukkitChunk_All(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_All(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     @Override
     public Chunk getNewChunk() {
         return Bukkit.getWorld(getParent().getWorldName()).getChunkAt(getX(), getZ());
diff --git a/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_All.java b/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_All.java
index 90e1e9b1..35421d4e 100644
--- a/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_All.java
+++ b/bukkit0/src/main/java/com/boydti/fawe/bukkit/v0/BukkitQueue_All.java
@@ -38,7 +38,7 @@ public class BukkitQueue_All extends BukkitQueue_0<Chunk, Chunk, Chunk> {
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         // Do nothing
     }
 
diff --git a/bukkit0/src/main/java/com/sk89q/worldedit/bukkit/BukkitCommandSender_unused_for_now.java b/bukkit0/src/main/java/com/sk89q/worldedit/bukkit/BukkitCommandSender_unused_for_now.java
new file mode 100644
index 00000000..0f6796f0
--- /dev/null
+++ b/bukkit0/src/main/java/com/sk89q/worldedit/bukkit/BukkitCommandSender_unused_for_now.java
@@ -0,0 +1,219 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package com.sk89q.worldedit.bukkit;
+
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.WorldVector;
+import com.sk89q.worldedit.entity.BaseEntity;
+import com.sk89q.worldedit.extension.platform.AbstractPlayerActor;
+import com.sk89q.worldedit.extent.inventory.BlockBag;
+import com.sk89q.worldedit.internal.cui.CUIEvent;
+import com.sk89q.worldedit.session.SessionKey;
+import com.sk89q.worldedit.util.Location;
+import com.sk89q.worldedit.util.auth.AuthorizationException;
+import com.sk89q.worldedit.world.World;
+import java.io.File;
+import java.util.UUID;
+import javax.annotation.Nullable;
+import org.bukkit.command.CommandSender;
+import org.bukkit.entity.Player;
+
+
+import static com.google.common.base.Preconditions.checkArgument;
+import static com.google.common.base.Preconditions.checkNotNull;
+
+public class BukkitCommandSender_unused_for_now extends AbstractPlayerActor {
+
+    /**
+     * One time generated ID.
+     */
+    private static final UUID DEFAULT_ID = UUID.fromString("a233eb4b-4cab-42cd-9fd9-7e7b9a3f74be");
+
+    private CommandSender player;
+    private WorldEditPlugin plugin;
+
+    public BukkitCommandSender_unused_for_now(WorldEditPlugin plugin, CommandSender sender) {
+        checkNotNull(plugin);
+        checkNotNull(sender);
+        checkArgument(!(sender instanceof Player), "Cannot wrap a player");
+
+        this.plugin = plugin;
+        this.player = sender;
+    }
+
+    @Override
+    public UUID getUniqueId() {
+        return DEFAULT_ID;
+    }
+
+    @Override
+    public String getName() {
+        return player.getName();
+    }
+
+    @Override
+    public void printRaw(String msg) {
+        for (String part : msg.split("\n")) {
+            player.sendMessage(part);
+        }
+    }
+
+    @Override
+    public void print(String msg) {
+        for (String part : msg.split("\n")) {
+            player.sendMessage("\u00A7d" + part);
+        }
+    }
+
+    @Override
+    public void printDebug(String msg) {
+        for (String part : msg.split("\n")) {
+            player.sendMessage("\u00A77" + part);
+        }
+    }
+
+    @Override
+    public void printError(String msg) {
+        for (String part : msg.split("\n")) {
+            player.sendMessage("\u00A7c" + part);
+        }
+    }
+
+    @Override
+    public boolean canDestroyBedrock() {
+        return true;
+    }
+
+    @Override
+    public String[] getGroups() {
+        return new String[0];
+    }
+
+    @Override
+    public boolean hasPermission(String perm) {
+        return true;
+    }
+
+    @Override
+    public void checkPermission(String permission) throws AuthorizationException {
+    }
+
+    @Override
+    public boolean isPlayer() {
+        return false;
+    }
+
+    @Override
+    public File openFileOpenDialog(String[] extensions) {
+        return null;
+    }
+
+    @Override
+    public File openFileSaveDialog(String[] extensions) {
+        return null;
+    }
+
+    @Override
+    public void dispatchCUIEvent(CUIEvent event) {
+    }
+
+    @Override
+    public SessionKey getSessionKey() {
+        return new SessionKey() {
+            @Nullable
+            @Override
+            public String getName() {
+                return null;
+            }
+
+            @Override
+            public boolean isActive() {
+                return false;
+            }
+
+            @Override
+            public boolean isPersistent() {
+                return false;
+            }
+
+            @Override
+            public UUID getUniqueId() {
+                return DEFAULT_ID;
+            }
+        };
+    }
+
+    @Override
+    public World getWorld() {
+        return null;
+    }
+
+    @Override
+    public int getItemInHand() {
+        return 0;
+    }
+
+    @Override
+    public void giveItem(int type, int amount) {
+
+    }
+
+    @Override
+    public BlockBag getInventoryBlockBag() {
+        return null;
+    }
+
+    @Override
+    public WorldVector getPosition() {
+        return null;
+    }
+
+    @Override
+    public double getPitch() {
+        return 0;
+    }
+
+    @Override
+    public double getYaw() {
+        return 0;
+    }
+
+    @Override
+    public void setPosition(Vector pos, float pitch, float yaw) {
+
+    }
+
+    @Nullable
+    @Override
+    public BaseEntity getState() {
+        return null;
+    }
+
+    @Override
+    public Location getLocation() {
+        return null;
+    }
+
+    @Nullable
+    @Override
+    public <T> T getFacet(Class<? extends T> cls) {
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitChunk_1_10.java b/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitChunk_1_10.java
index edcab622..37c0164a 100644
--- a/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitChunk_1_10.java
+++ b/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitChunk_1_10.java
@@ -10,12 +10,35 @@ import com.boydti.fawe.object.FaweQueue;
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.ReflectionUtils;
-import com.sk89q.jnbt.*;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.jnbt.ListTag;
+import com.sk89q.jnbt.LongTag;
+import com.sk89q.jnbt.StringTag;
+import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.internal.Constants;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
-import java.util.*;
-import net.minecraft.server.v1_10_R1.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import net.minecraft.server.v1_10_R1.Block;
+import net.minecraft.server.v1_10_R1.BlockPosition;
+import net.minecraft.server.v1_10_R1.ChunkSection;
+import net.minecraft.server.v1_10_R1.DataBits;
+import net.minecraft.server.v1_10_R1.DataPalette;
+import net.minecraft.server.v1_10_R1.DataPaletteBlock;
+import net.minecraft.server.v1_10_R1.DataPaletteGlobal;
+import net.minecraft.server.v1_10_R1.Entity;
+import net.minecraft.server.v1_10_R1.EntityPlayer;
+import net.minecraft.server.v1_10_R1.EntityTypes;
+import net.minecraft.server.v1_10_R1.IBlockData;
+import net.minecraft.server.v1_10_R1.NBTTagCompound;
+import net.minecraft.server.v1_10_R1.TileEntity;
 import org.bukkit.Chunk;
 import org.bukkit.World;
 import org.bukkit.craftbukkit.v1_10_R1.CraftChunk;
@@ -36,16 +59,26 @@ public class BukkitChunk_1_10 extends CharFaweChunk<Chunk, BukkitQueue_1_10> {
         super(parent, x, z);
     }
 
-    @Override
-    public Chunk getNewChunk() {
-        return ((com.boydti.fawe.bukkit.v1_10.BukkitQueue_1_10) getParent()).getWorld().getChunkAt(getX(), getZ());
+    public BukkitChunk_1_10(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
     }
 
     @Override
-    public CharFaweChunk<Chunk, BukkitQueue_1_10> copy(boolean shallow) {
-        BukkitChunk_1_10 value = (BukkitChunk_1_10) super.copy(shallow);
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_1_10 copy;
+        if (shallow) {
+            copy = new BukkitChunk_1_10(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_1_10(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
         if (sectionPalettes != null) {
-            value.sectionPalettes = new DataPaletteBlock[16];
+            copy.sectionPalettes = new DataPaletteBlock[16];
             try {
                 Field fieldBits = DataPaletteBlock.class.getDeclaredField("b");
                 fieldBits.setAccessible(true);
@@ -83,13 +116,18 @@ public class BukkitChunk_1_10 extends CharFaweChunk<Chunk, BukkitQueue_1_10> {
                         field.set(newBits, currentValue);
                     }
                     fieldBits.set(paletteBlock, newBits);
-                    value.sectionPalettes[i] = paletteBlock;
+                    copy.sectionPalettes[i] = paletteBlock;
                 }
             } catch (Throwable e) {
                 MainUtil.handleError(e);
             }
         }
-        return value;
+        return copy;
+    }
+
+    @Override
+    public Chunk getNewChunk() {
+        return ((com.boydti.fawe.bukkit.v1_10.BukkitQueue_1_10) getParent()).getWorld().getChunkAt(getX(), getZ());
     }
 
     public DataPaletteBlock newDataPaletteBlock() {
@@ -152,6 +190,8 @@ public class BukkitChunk_1_10 extends CharFaweChunk<Chunk, BukkitQueue_1_10> {
             Class<? extends net.minecraft.server.v1_10_R1.Chunk> clazzChunk = nmsChunk.getClass();
             final Collection<Entity>[] entities = (Collection<Entity>[]) getParent().getEntitySlices.invoke(nmsChunk);
             Map<BlockPosition, TileEntity> tiles = nmsChunk.getTileEntities();
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
             // Remove entities
             for (int i = 0; i < entities.length; i++) {
                 int count = this.getCount(i);
diff --git a/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitQueue_1_10.java b/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitQueue_1_10.java
index ea84f48b..26bcbb55 100644
--- a/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitQueue_1_10.java
+++ b/bukkit110/src/main/java/com/boydti/fawe/bukkit/v1_10/BukkitQueue_1_10.java
@@ -81,13 +81,14 @@ public class BukkitQueue_1_10 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         CraftChunk craftChunk = (CraftChunk) chunk.getChunk();
         if (craftChunk != null) {
             int[] otherMap = craftChunk.getHandle().heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -288,7 +289,7 @@ public class BukkitQueue_1_10 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
             }
             // Send chunks
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 PacketPlayOutMapChunk packet = new PacketPlayOutMapChunk(nmsChunk, 65280);
                 for (EntityPlayer player : playerChunk.c) {
                     player.playerConnection.sendPacket(packet);
@@ -429,7 +430,7 @@ public class BukkitQueue_1_10 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         BukkitChunk_1_10 previous = getFaweChunk(fs.getX(), fs.getZ());
         // Copy blocks
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ChunkSection section = sections[layer];
@@ -459,7 +460,6 @@ public class BukkitQueue_1_10 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
                 }
             }
         }
-        previous.ids = idPrevious;
         // Copy tiles
         if (tiles != null) {
             for (Map.Entry<BlockPosition, TileEntity> entry : tiles.entrySet()) {
diff --git a/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitChunk_1_11.java b/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitChunk_1_11.java
index 70f379de..18bc16f2 100644
--- a/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitChunk_1_11.java
+++ b/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitChunk_1_11.java
@@ -62,16 +62,26 @@ public class BukkitChunk_1_11 extends CharFaweChunk<Chunk, com.boydti.fawe.bukki
         super(parent, x, z);
     }
 
-    @Override
-    public Chunk getNewChunk() {
-        return ((com.boydti.fawe.bukkit.v1_11.BukkitQueue_1_11) getParent()).getWorld().getChunkAt(getX(), getZ());
+    public BukkitChunk_1_11(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
     }
 
     @Override
-    public CharFaweChunk<Chunk, com.boydti.fawe.bukkit.v1_11.BukkitQueue_1_11> copy(boolean shallow) {
-        BukkitChunk_1_11 value = (BukkitChunk_1_11) super.copy(shallow);
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_1_11 copy;
+        if (shallow) {
+            copy = new BukkitChunk_1_11(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_1_11(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
         if (sectionPalettes != null) {
-            value.sectionPalettes = new DataPaletteBlock[16];
+            copy.sectionPalettes = new DataPaletteBlock[16];
             try {
                 Field fieldBits = DataPaletteBlock.class.getDeclaredField("b");
                 fieldBits.setAccessible(true);
@@ -109,13 +119,18 @@ public class BukkitChunk_1_11 extends CharFaweChunk<Chunk, com.boydti.fawe.bukki
                         field.set(newBits, currentValue);
                     }
                     fieldBits.set(paletteBlock, newBits);
-                    value.sectionPalettes[i] = paletteBlock;
+                    copy.sectionPalettes[i] = paletteBlock;
                 }
             } catch (Throwable e) {
                 MainUtil.handleError(e);
             }
         }
-        return value;
+        return copy;
+    }
+
+    @Override
+    public Chunk getNewChunk() {
+        return ((com.boydti.fawe.bukkit.v1_11.BukkitQueue_1_11) getParent()).getWorld().getChunkAt(getX(), getZ());
     }
 
     public DataPaletteBlock newDataPaletteBlock() {
@@ -178,6 +193,8 @@ public class BukkitChunk_1_11 extends CharFaweChunk<Chunk, com.boydti.fawe.bukki
             Class<? extends net.minecraft.server.v1_11_R1.Chunk> clazzChunk = nmsChunk.getClass();
             final Collection<Entity>[] entities = (Collection<Entity>[]) getParent().getEntitySlices.invoke(nmsChunk);
             Map<BlockPosition, TileEntity> tiles = nmsChunk.getTileEntities();
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
             // Remove entities
             for (int i = 0; i < entities.length; i++) {
                 int count = this.getCount(i);
diff --git a/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java b/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
index 9e4a755f..7e768b2d 100644
--- a/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
+++ b/bukkit111/src/main/java/com/boydti/fawe/bukkit/v1_11/BukkitQueue_1_11.java
@@ -55,13 +55,14 @@ public class BukkitQueue_1_11 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         CraftChunk craftChunk = (CraftChunk) chunk.getChunk();
         if (craftChunk != null) {
             int[] otherMap = craftChunk.getHandle().heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -262,7 +263,7 @@ public class BukkitQueue_1_11 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
             }
             // Send chunks
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 PacketPlayOutMapChunk packet = new PacketPlayOutMapChunk(nmsChunk, 65280);
                 for (EntityPlayer player : playerChunk.c) {
                     player.playerConnection.sendPacket(packet);
@@ -403,7 +404,7 @@ public class BukkitQueue_1_11 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         BukkitChunk_1_11 previous = getFaweChunk(fs.getX(), fs.getZ());
         // Copy blocks
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ChunkSection section = sections[layer];
@@ -433,7 +434,6 @@ public class BukkitQueue_1_11 extends BukkitQueue_0<Chunk, ChunkSection[], Chunk
                 }
             }
         }
-        previous.ids = idPrevious;
         // Copy tiles
         if (tiles != null) {
             for (Map.Entry<BlockPosition, TileEntity> entry : tiles.entrySet()) {
diff --git a/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitChunk_1_7.java b/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitChunk_1_7.java
index d0099353..b9eaa802 100644
--- a/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitChunk_1_7.java
+++ b/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitChunk_1_7.java
@@ -43,8 +43,8 @@ public class BukkitChunk_1_7 extends CharFaweChunk<Chunk, BukkitQueue17> {
         return Bukkit.getWorld(getParent().getWorldName()).getChunkAt(getX(), getZ());
     }
 
-    public byte[][] byteIds;
-    public NibbleArray[] datas;
+    public final byte[][] byteIds;
+    public final NibbleArray[] datas;
 
     public BukkitChunk_1_7(FaweQueue parent, int x, int z) {
         super(parent, x, z);
@@ -52,6 +52,29 @@ public class BukkitChunk_1_7 extends CharFaweChunk<Chunk, BukkitQueue17> {
         this.datas = new NibbleArray[16];
     }
 
+    public BukkitChunk_1_7(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap, byte[][] byteIds, NibbleArray[] datas) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+        this.byteIds = byteIds;
+        this.datas = datas;
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_1_7 copy;
+        if (shallow) {
+            copy = new BukkitChunk_1_7(getParent(), getX(), getZ(), ids, count, air, relight, heightMap, byteIds, datas);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_1_7(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone(), (byte[][]) MainUtil.copyNd(byteIds), datas.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     public byte[] getByteIdArray(int i) {
         return this.byteIds[i];
     }
@@ -114,29 +137,6 @@ public class BukkitChunk_1_7 extends CharFaweChunk<Chunk, BukkitQueue17> {
         }
     }
 
-    @Override
-    public BukkitChunk_1_7 copy(boolean shallow) {
-        BukkitChunk_1_7 copy = new BukkitChunk_1_7(getParent(), getX(), getZ());
-        if (shallow) {
-            copy.byteIds = byteIds;
-            copy.datas = datas;
-            copy.air = air;
-            copy.biomes = biomes;
-            copy.chunk = chunk;
-            copy.count = count;
-            copy.relight = relight;
-        } else {
-            copy.byteIds = (byte[][]) MainUtil.copyNd(byteIds);
-            copy.datas = datas.clone();
-            copy.air = air.clone();
-            copy.biomes = biomes.clone();
-            copy.chunk = chunk;
-            copy.count = count.clone();
-            copy.relight = relight.clone();
-        }
-        return copy;
-    }
-
     @Override
     public void start() {
         getChunk().load(true);
@@ -155,7 +155,8 @@ public class BukkitChunk_1_7 extends CharFaweChunk<Chunk, BukkitQueue17> {
             ChunkSection[] sections = nmsChunk.getSections();
             Map<ChunkPosition, TileEntity> tiles = nmsChunk.tileEntities;
             Collection<Entity>[] entities = nmsChunk.entitySlices;
-
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
             // Remove entities
             for (int i = 0; i < 16; i++) {
                 int count = this.getCount(i);
diff --git a/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitQueue17.java b/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitQueue17.java
index dede9fa3..6014f6f6 100644
--- a/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitQueue17.java
+++ b/bukkit1710/src/main/java/com/boydti/fawe/bukkit/v1_7/BukkitQueue17.java
@@ -87,13 +87,14 @@ public class BukkitQueue17 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkSec
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         CraftChunk craftChunk = (CraftChunk) chunk.getChunk();
         if (craftChunk != null) {
             int[] otherMap = craftChunk.getHandle().heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -165,7 +166,6 @@ public class BukkitQueue17 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkSec
         Map<ChunkPosition, TileEntity> tiles = (Map<ChunkPosition, TileEntity>) tilesGeneric;
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ChunkSection section = sections[layer];
@@ -184,7 +184,6 @@ public class BukkitQueue17 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkSec
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<ChunkPosition, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
@@ -298,7 +297,7 @@ public class BukkitQueue17 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkSec
             }
             // Send chunks
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 PacketPlayOutMapChunk packet = new PacketPlayOutMapChunk(nmsChunk, false, 65280, 5);
                 for (EntityPlayer player : players) {
                     player.playerConnection.sendPacket(packet);
diff --git a/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitChunk_1_8.java b/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitChunk_1_8.java
index 4090a068..5aa06891 100644
--- a/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitChunk_1_8.java
+++ b/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitChunk_1_8.java
@@ -46,6 +46,27 @@ public class BukkitChunk_1_8 extends CharFaweChunk<Chunk, BukkitQueue18R3> {
         super(parent, x, z);
     }
 
+    public BukkitChunk_1_8(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_1_8 copy;
+        if (shallow) {
+            copy = new BukkitChunk_1_8(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_1_8(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     @Override
     public Chunk getNewChunk() {
         return Bukkit.getWorld(getParent().getWorldName()).getChunkAt(getX(), getZ());
@@ -69,7 +90,8 @@ public class BukkitChunk_1_8 extends CharFaweChunk<Chunk, BukkitQueue18R3> {
             ChunkSection[] sections = nmsChunk.getSections();
             Map<BlockPosition, TileEntity> tiles = nmsChunk.getTileEntities();
             Collection<Entity>[] entities = nmsChunk.getEntitySlices();
-
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
             // Remove entities
             for (int i = 0; i < 16; i++) {
                 int count = this.getCount(i);
diff --git a/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue18R3.java b/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue18R3.java
index 497b4ea0..edefd5f9 100644
--- a/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue18R3.java
+++ b/bukkit18/src/main/java/com/boydti/fawe/bukkit/v1_8/BukkitQueue18R3.java
@@ -85,13 +85,14 @@ public class BukkitQueue18R3 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkS
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         CraftChunk craftChunk = (CraftChunk) chunk.getChunk();
         if (craftChunk != null) {
             int[] otherMap = craftChunk.getHandle().heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -160,7 +161,7 @@ public class BukkitQueue18R3 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkS
         Map<BlockPosition, TileEntity> tiles = (Map<BlockPosition, TileEntity>) tilesGeneric;
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ChunkSection section = sections[layer];
@@ -177,7 +178,6 @@ public class BukkitQueue18R3 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkS
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<BlockPosition, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
@@ -286,7 +286,7 @@ public class BukkitQueue18R3 extends BukkitQueue_0<Chunk, ChunkSection[], ChunkS
             }
             // Send chunks
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 PacketPlayOutMapChunk packet = new PacketPlayOutMapChunk(nmsChunk, false, 65280);
                 for (EntityPlayer player : players) {
                     player.playerConnection.sendPacket(packet);
diff --git a/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitChunk_1_9.java b/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitChunk_1_9.java
index 6a1f6f21..c1c11c37 100644
--- a/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitChunk_1_9.java
+++ b/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitChunk_1_9.java
@@ -10,12 +10,36 @@ import com.boydti.fawe.object.FaweQueue;
 import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
 import com.boydti.fawe.util.ReflectionUtils;
-import com.sk89q.jnbt.*;
+import com.sk89q.jnbt.CompoundTag;
+import com.sk89q.jnbt.ListTag;
+import com.sk89q.jnbt.LongTag;
+import com.sk89q.jnbt.StringTag;
+import com.sk89q.jnbt.Tag;
 import com.sk89q.worldedit.internal.Constants;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
-import java.util.*;
-import net.minecraft.server.v1_9_R2.*;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Set;
+import java.util.UUID;
+import net.minecraft.server.v1_9_R2.Block;
+import net.minecraft.server.v1_9_R2.BlockPosition;
+import net.minecraft.server.v1_9_R2.Blocks;
+import net.minecraft.server.v1_9_R2.ChunkSection;
+import net.minecraft.server.v1_9_R2.DataBits;
+import net.minecraft.server.v1_9_R2.DataPalette;
+import net.minecraft.server.v1_9_R2.DataPaletteBlock;
+import net.minecraft.server.v1_9_R2.DataPaletteGlobal;
+import net.minecraft.server.v1_9_R2.Entity;
+import net.minecraft.server.v1_9_R2.EntityPlayer;
+import net.minecraft.server.v1_9_R2.EntityTypes;
+import net.minecraft.server.v1_9_R2.IBlockData;
+import net.minecraft.server.v1_9_R2.NBTTagCompound;
+import net.minecraft.server.v1_9_R2.TileEntity;
 import org.bukkit.Chunk;
 import org.bukkit.World;
 import org.bukkit.block.Biome;
@@ -37,16 +61,26 @@ public class BukkitChunk_1_9 extends CharFaweChunk<Chunk, BukkitQueue_1_9_R1> {
         super(parent, x, z);
     }
 
-    @Override
-    public Chunk getNewChunk() {
-        return ((BukkitQueue_1_9_R1) getParent()).getWorld().getChunkAt(getX(), getZ());
+    public BukkitChunk_1_9(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
     }
 
     @Override
-    public BukkitChunk_1_9 copy(boolean shallow) {
-        BukkitChunk_1_9 value = (BukkitChunk_1_9) super.copy(shallow);
+    public CharFaweChunk copy(boolean shallow) {
+        BukkitChunk_1_9 copy;
+        if (shallow) {
+            copy = new BukkitChunk_1_9(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new BukkitChunk_1_9(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
         if (sectionPalettes != null) {
-            value.sectionPalettes = new DataPaletteBlock[16];
+            copy.sectionPalettes = new DataPaletteBlock[16];
             try {
                 Field fieldBits = DataPaletteBlock.class.getDeclaredField("b");
                 fieldBits.setAccessible(true);
@@ -84,13 +118,18 @@ public class BukkitChunk_1_9 extends CharFaweChunk<Chunk, BukkitQueue_1_9_R1> {
                         field.set(newBits, currentValue);
                     }
                     fieldBits.set(paletteBlock, newBits);
-                    value.sectionPalettes[i] = paletteBlock;
+                    copy.sectionPalettes[i] = paletteBlock;
                 }
             } catch (Throwable e) {
                 MainUtil.handleError(e);
             }
         }
-        return value;
+        return copy;
+    }
+
+    @Override
+    public Chunk getNewChunk() {
+        return ((BukkitQueue_1_9_R1) getParent()).getWorld().getChunkAt(getX(), getZ());
     }
 
     public DataPaletteBlock newDataPaletteBlock() {
@@ -154,6 +193,8 @@ public class BukkitChunk_1_9 extends CharFaweChunk<Chunk, BukkitQueue_1_9_R1> {
             final Field ef = clazzChunk.getDeclaredField("entitySlices");
             final Collection<Entity>[] entities = (Collection<Entity>[]) ef.get(nmsChunk);
             Map<BlockPosition, TileEntity> tiles = nmsChunk.getTileEntities();
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
             // Remove entities
             for (int i = 0; i < entities.length; i++) {
                 int count = this.getCount(i);
diff --git a/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java b/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
index ac8e0f62..47ec0f6e 100644
--- a/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
+++ b/bukkit19/src/main/java/com/boydti/fawe/bukkit/v1_9/BukkitQueue_1_9_R1.java
@@ -97,13 +97,14 @@ public class BukkitQueue_1_9_R1 extends BukkitQueue_0<Chunk, ChunkSection[], Chu
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         CraftChunk craftChunk = (CraftChunk) chunk.getChunk();
         if (craftChunk != null) {
             int[] otherMap = craftChunk.getHandle().heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -154,7 +155,7 @@ public class BukkitQueue_1_9_R1 extends BukkitQueue_0<Chunk, ChunkSection[], Chu
             }
             // Send chunks
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 PacketPlayOutMapChunk packet = new PacketPlayOutMapChunk(nmsChunk, 65280);
                 for (EntityPlayer player : playerChunk.c) {
                     player.playerConnection.sendPacket(packet);
@@ -381,7 +382,7 @@ public class BukkitQueue_1_9_R1 extends BukkitQueue_0<Chunk, ChunkSection[], Chu
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
         // Copy blocks
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ChunkSection section = sections[layer];
@@ -411,7 +412,6 @@ public class BukkitQueue_1_9_R1 extends BukkitQueue_0<Chunk, ChunkSection[], Chu
                 }
             }
         }
-        previous.ids = idPrevious;
         // Copy tiles
         if (tiles != null) {
             for (Map.Entry<BlockPosition, TileEntity> entry : tiles.entrySet()) {
diff --git a/core/src/main/java/com/boydti/fawe/FaweCache.java b/core/src/main/java/com/boydti/fawe/FaweCache.java
index f203d404..ea4cc610 100644
--- a/core/src/main/java/com/boydti/fawe/FaweCache.java
+++ b/core/src/main/java/com/boydti/fawe/FaweCache.java
@@ -652,8 +652,26 @@ public class FaweCache {
             case 33:
             case 151:
             case 178:
+            case 209:
             case 210:
             case 211:
+            case 255:
+            case 219:
+            case 220:
+            case 221:
+            case 222:
+            case 223:
+            case 224:
+            case 225:
+            case 226:
+            case 227:
+            case 228:
+            case 229:
+            case 230:
+            case 231:
+            case 232:
+            case 233:
+            case 234:
                 return true;
             default:
                 return false;
diff --git a/core/src/main/java/com/boydti/fawe/example/CharFaweChunk.java b/core/src/main/java/com/boydti/fawe/example/CharFaweChunk.java
index 50ed82e3..6b9acc66 100644
--- a/core/src/main/java/com/boydti/fawe/example/CharFaweChunk.java
+++ b/core/src/main/java/com/boydti/fawe/example/CharFaweChunk.java
@@ -4,7 +4,6 @@ import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.object.BytePair;
 import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FaweQueue;
-import com.boydti.fawe.util.MainUtil;
 import com.boydti.fawe.util.MathMan;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.world.biome.BaseBiome;
@@ -17,21 +16,28 @@ import java.util.UUID;
 
 public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T> {
 
-    public char[][] ids;
-    public short[] count;
-    public short[] air;
-    public short[] relight;
+    public final char[][] ids;
+    public final short[] count;
+    public final short[] air;
+    public final short[] relight;
+    public final byte[] heightMap;
+
     public int[][] biomes;
-    private int bitMask = -1;
-
     public HashMap<BytePair, CompoundTag> tiles;
-
     public HashSet<CompoundTag> entities;
-
     public HashSet<UUID> entityRemoves;
 
     public T chunk;
 
+    public CharFaweChunk(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z);
+        this.ids = ids;
+        this.count = count;
+        this.air = air;
+        this.relight = relight;
+        this.heightMap = heightMap;
+    }
+
     /**
      * A FaweSections object represents a chunk and the blocks that you wish to change in it.
      *
@@ -45,6 +51,7 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
         this.count = new short[HEIGHT >> 4];
         this.air = new short[HEIGHT >> 4];
         this.relight = new short[HEIGHT >> 4];
+        this.heightMap = new byte[256];
     }
 
     @Override
@@ -117,21 +124,15 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
 
     @Override
     public int getBitMask() {
-        if (bitMask == -1) {
-            this.bitMask = 0;
-            for (int section = 0; section < ids.length; section++) {
-                if (ids[section] != null) {
-                    bitMask += 1 << section;
-                }
+        int bitMask = 0;
+        for (int section = 0; section < ids.length; section++) {
+            if (ids[section] != null) {
+                bitMask += 1 << section;
             }
         }
         return bitMask;
     }
 
-    public void setBitMask(int value) {
-        this.bitMask = value;
-    }
-
     /**
      * Get the raw data for a section
      * @param i
@@ -247,6 +248,7 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
                 this.relight[i]++;
             default:
                 vs[j] = (char) (id << 4);
+                heightMap[z << 4 | x] = (byte) y;
                 return;
         }
     }
@@ -332,6 +334,7 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
             case 191:
             case 192:
                 vs[j] = (char) (id << 4);
+                heightMap[z << 4 | x] = (byte) y;
                 return;
             case 130:
             case 76:
@@ -346,6 +349,7 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
             case 68: // removed
             default:
                 vs[j] = (char) ((id << 4) + data);
+                heightMap[z << 4 | x] = (byte) y;
                 return;
         }
     }
@@ -363,23 +367,5 @@ public abstract class CharFaweChunk<T, V extends FaweQueue> extends FaweChunk<T>
     }
 
     @Override
-    public CharFaweChunk<T, V> copy(boolean shallow) {
-        CharFaweChunk<T, V> copy = (CharFaweChunk<T, V>) getParent().getFaweChunk(getX(), getZ());
-        if (shallow) {
-            copy.ids = ids;
-            copy.air = air;
-            copy.biomes = biomes;
-            copy.chunk = chunk;
-            copy.count = count;
-            copy.relight = relight;
-        } else {
-            copy.ids = (char[][]) MainUtil.copyNd(ids);
-            copy.air = air.clone();
-            copy.biomes = biomes.clone();
-            copy.chunk = chunk;
-            copy.count = count.clone();
-            copy.relight = relight.clone();
-        }
-        return copy;
-    }
+    public abstract CharFaweChunk<T, V> copy(boolean shallow);
 }
diff --git a/core/src/main/java/com/boydti/fawe/example/NMSMappedFaweQueue.java b/core/src/main/java/com/boydti/fawe/example/NMSMappedFaweQueue.java
index 216a2355..1b1b701a 100644
--- a/core/src/main/java/com/boydti/fawe/example/NMSMappedFaweQueue.java
+++ b/core/src/main/java/com/boydti/fawe/example/NMSMappedFaweQueue.java
@@ -91,7 +91,7 @@ public abstract class NMSMappedFaweQueue<WORLD, CHUNK, CHUNKSECTION, SECTION> ex
         refreshChunk(fc);
     }
 
-    public abstract void setHeightMap(FaweChunk chunk, int[] heightMap);
+    public abstract void setHeightMap(FaweChunk chunk, byte[] heightMap);
 
     public abstract void setFullbright(CHUNKSECTION sections);
 
diff --git a/core/src/main/java/com/boydti/fawe/example/NMSRelighter.java b/core/src/main/java/com/boydti/fawe/example/NMSRelighter.java
index 0a98e777..0687565c 100644
--- a/core/src/main/java/com/boydti/fawe/example/NMSRelighter.java
+++ b/core/src/main/java/com/boydti/fawe/example/NMSRelighter.java
@@ -3,9 +3,7 @@ package com.boydti.fawe.example;
 import com.boydti.fawe.FaweCache;
 import com.boydti.fawe.object.FaweChunk;
 import com.boydti.fawe.object.FaweQueue;
-import com.boydti.fawe.object.RunnableVal;
 import com.boydti.fawe.util.MathMan;
-import com.boydti.fawe.util.TaskManager;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
 
@@ -130,21 +128,8 @@ public class NMSRelighter {
         for (Map.Entry<Long, RelightSkyEntry> entry : skyToRelight.entrySet()) {
             RelightSkyEntry chunk = entry.getValue();
             CharFaweChunk fc = (CharFaweChunk) queue.getFaweChunk(chunk.x, chunk.z);
-            fcs.put(fc, chunk.heightMap);
-            fc.setBitMask(chunk.bitmask);
             queue.sendChunk(fc);
         }
-        TaskManager.IMP.sync(new RunnableVal<Object>() {
-            @Override
-            public void run(Object value) {
-                for (Map.Entry<FaweChunk, int[]> entry : fcs.entrySet()) {
-                    FaweChunk chunk = entry.getKey();
-                    if (queue.isChunkLoaded(chunk.getX(), chunk.getZ())) {
-                        queue.setHeightMap(chunk, entry.getValue());
-                    }
-                }
-            }
-        });
     }
 
     private boolean isTransparent(int x, int y, int z) {
@@ -248,7 +233,6 @@ public class NMSRelighter {
                             break;
                         case 15:
                             if (opacity > 1) {
-                                chunk.heightMap[z << 4 | x] = y;
                                 value -= opacity;
                                 mask[j] = value;
                             }
@@ -347,7 +331,6 @@ public class NMSRelighter {
         public final int x;
         public final int z;
         public final byte[] mask;
-        public int[] heightMap = new int[256];
         public final boolean[] fix;
         public int bitmask;
         public boolean smooth;
diff --git a/core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAQueue.java b/core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAQueue.java
index 962ce9de..bde26619 100644
--- a/core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAQueue.java
+++ b/core/src/main/java/com/boydti/fawe/jnbt/anvil/MCAQueue.java
@@ -163,13 +163,14 @@ public class MCAQueue extends NMSMappedFaweQueue<FaweQueue, FaweChunk, FaweChunk
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         MCAChunk mca = (MCAChunk) chunk;
         if (mca != null) {
             int[] otherMap = mca.getHeightMapArray();
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
diff --git a/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java b/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
index ec0d65f3..c8c4c949 100644
--- a/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
+++ b/core/src/main/java/com/boydti/fawe/object/extent/FastWorldEditExtent.java
@@ -169,6 +169,26 @@ public class FastWorldEditExtent extends AbstractDelegateExtent implements HasFa
             case 33:
             case 151:
             case 178:
+            case 209:
+            case 210:
+            case 211:
+            case 255:
+            case 219:
+            case 220:
+            case 221:
+            case 222:
+            case 223:
+            case 224:
+            case 225:
+            case 226:
+            case 227:
+            case 228:
+            case 229:
+            case 230:
+            case 231:
+            case 232:
+            case 233:
+            case 234:
                 // Tile
                 return queue.setBlock(x, y, z, id, (byte) block.getData(), block.getNbtData());
             case 0:
diff --git a/core/src/main/java/com/boydti/fawe/util/MemUtil.java b/core/src/main/java/com/boydti/fawe/util/MemUtil.java
index 56eca141..0eee3711 100644
--- a/core/src/main/java/com/boydti/fawe/util/MemUtil.java
+++ b/core/src/main/java/com/boydti/fawe/util/MemUtil.java
@@ -1,8 +1,8 @@
 package com.boydti.fawe.util;
 
 import com.boydti.fawe.config.Settings;
-import java.util.concurrent.BlockingQueue;
-import java.util.concurrent.LinkedBlockingQueue;
+import java.util.Queue;
+import java.util.concurrent.ConcurrentLinkedQueue;
 import java.util.concurrent.atomic.AtomicBoolean;
 
 public class MemUtil {
@@ -42,8 +42,8 @@ public class MemUtil {
         return size;
     }
 
-    private static BlockingQueue<Runnable> memoryLimitedTasks = new LinkedBlockingQueue<>();
-    private static BlockingQueue<Runnable> memoryPlentifulTasks = new LinkedBlockingQueue<>();
+    private static Queue<Runnable> memoryLimitedTasks = new ConcurrentLinkedQueue<>();
+    private static Queue<Runnable> memoryPlentifulTasks = new ConcurrentLinkedQueue<>();
 
     public static void addMemoryLimitedTask(Runnable run) {
         if (run != null)
diff --git a/core/src/main/java/com/boydti/fawe/util/WEManager.java b/core/src/main/java/com/boydti/fawe/util/WEManager.java
index 8419176f..5435bd28 100644
--- a/core/src/main/java/com/boydti/fawe/util/WEManager.java
+++ b/core/src/main/java/com/boydti/fawe/util/WEManager.java
@@ -4,7 +4,6 @@ import com.boydti.fawe.config.BBC;
 import com.boydti.fawe.config.Settings;
 import com.boydti.fawe.object.FawePlayer;
 import com.boydti.fawe.object.RegionWrapper;
-import com.boydti.fawe.object.RunnableVal;
 import com.boydti.fawe.object.exception.FaweException;
 import com.boydti.fawe.object.extent.NullExtent;
 import com.boydti.fawe.regions.FaweMask;
@@ -73,38 +72,25 @@ public class WEManager {
      * @return
      */
     public RegionWrapper[] getMask(final FawePlayer<?> player, FaweMaskManager.MaskType type) {
-//        HashSet<RegionWrapper> mask = TaskManager.IMP.sync(new RunnableVal<HashSet<RegionWrapper>>() {
         if (player.hasPermission("fawe.bypass") || !Settings.REGION_RESTRICTIONS) {
             return new RegionWrapper[] {new RegionWrapper(Integer.MIN_VALUE, Integer.MAX_VALUE, Integer.MIN_VALUE, Integer.MAX_VALUE)};
         }
-        HashSet<RegionWrapper> mask = new RunnableVal<HashSet<RegionWrapper>>() {
-            @Override
-            public void run(HashSet<RegionWrapper> ignore) {
-                this.value = new HashSet<>();
-                String world = player.getLocation().world;
-                if (!world.equals(player.getMeta("lastMaskWorld"))) {
-                    player.deleteMeta("lastMaskWorld");
-                    player.deleteMeta("lastMask");
-                }
-                player.setMeta("lastMaskWorld", world);
-                for (final FaweMaskManager manager : managers) {
-                    if (player.hasPermission("fawe." + manager.getKey())) {
-                        final FaweMask mask = manager.getMask(player);
-                        if (mask != null) {
-                            TaskManager.IMP.async(new Runnable() {
-                                @Override
-                                public void run() {
-
-                                }
-                            });
-                            value.addAll(mask.getRegions());
-                        }
-                    }
+        HashSet<RegionWrapper> mask = new HashSet<>();
+        String world = player.getLocation().world;
+        if (!world.equals(player.getMeta("lastMaskWorld"))) {
+            player.deleteMeta("lastMaskWorld");
+            player.deleteMeta("lastMask");
+        }
+        player.setMeta("lastMaskWorld", world);
+        for (final FaweMaskManager manager : managers) {
+            if (player.hasPermission("fawe." + manager.getKey())) {
+                final FaweMask fm = manager.getMask(player);
+                if (fm != null) {
+                    mask.addAll(fm.getRegions());
                 }
             }
-//        }, 1000);
-        }.runAndGet();
-        if (mask == null || mask.isEmpty()) {
+        }
+        if (mask.isEmpty()) {
             mask = player.getMeta("lastMask");
             if (mask == null) {
                 mask = new HashSet<>();
diff --git a/core/src/main/java/com/sk89q/worldedit/function/entity/ExtentEntityCopy.java b/core/src/main/java/com/sk89q/worldedit/function/entity/ExtentEntityCopy.java
index 248775b9..c26c72b4 100644
--- a/core/src/main/java/com/sk89q/worldedit/function/entity/ExtentEntityCopy.java
+++ b/core/src/main/java/com/sk89q/worldedit/function/entity/ExtentEntityCopy.java
@@ -95,14 +95,14 @@ public class ExtentEntityCopy implements EntityFunction {
             Vector pivot = from.round().add(0.5, 0.5, 0.5);
             Vector newPosition = transform.apply(location.toVector().subtract(pivot));
             Vector newDirection;
-
-            newDirection = transform.isIdentity() ?
-                    entity.getLocation().getDirection()
-                    : new Vector(transform.apply(location.getDirection())).subtract(transform.apply(Vector.ZERO)).normalize();
-            newLocation = new Location(destination, newPosition.add(to.round().add(0.5, 0.5, 0.5)), newDirection);
-
-            // Some entities store their position data in NBT
-            state = transformNbtData(state);
+            if (transform.isIdentity()) {
+                newDirection = entity.getLocation().getDirection();
+                newLocation = new Location(destination, newPosition.add(to.round().add(0.5, 0.5, 0.5)), newDirection);
+            } else {
+                newDirection = new Vector(transform.apply(location.getDirection())).subtract(transform.apply(Vector.ZERO)).normalize();
+                newLocation = new Location(destination, newPosition.add(to.round().add(0.5, 0.5, 0.5)), newDirection);
+                state = transformNbtData(state);
+            }
 
             boolean success = destination.createEntity(newLocation, state) != null;
 
diff --git a/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java b/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
index 780fcfa3..17211d20 100644
--- a/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
+++ b/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
@@ -51,17 +51,26 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
         super(parent, x, z);
     }
 
-    @Override
-    public Chunk getNewChunk() {
-        World world = ((ForgeQueue_All) getParent()).getWorld();
-        return world.getChunkProvider().provideChunk(getX(), getZ());
+    public ForgeChunk_All(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
     }
 
     @Override
-    public ForgeChunk_All copy(boolean shallow) {
-        ForgeChunk_All value = (ForgeChunk_All) super.copy(shallow);
+    public CharFaweChunk copy(boolean shallow) {
+        ForgeChunk_All copy;
+        if (shallow) {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
         if (sectionPalettes != null) {
-            value.sectionPalettes = new BlockStateContainer[16];
+            copy.sectionPalettes = new BlockStateContainer[16];
             try {
                 Field fieldBits = BlockStateContainer.class.getDeclaredField("storage");
                 fieldBits.setAccessible(true);
@@ -99,13 +108,19 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                         field.set(newBits, currentValue);
                     }
                     fieldBits.set(paletteBlock, newBits);
-                    value.sectionPalettes[i] = paletteBlock;
+                    copy.sectionPalettes[i] = paletteBlock;
                 }
             } catch (Throwable e) {
                 MainUtil.handleError(e);
             }
         }
-        return value;
+        return copy;
+    }
+
+    @Override
+    public Chunk getNewChunk() {
+        World world = ((ForgeQueue_All) getParent()).getWorld();
+        return world.getChunkProvider().provideChunk(getX(), getZ());
     }
 
     public void optimize() {
@@ -146,6 +161,10 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
             ExtendedBlockStorage[] sections = nmsChunk.getBlockStorageArray();
             Map<BlockPos, TileEntity> tiles = nmsChunk.getTileEntityMap();
             ClassInheritanceMultiMap<Entity>[] entities = nmsChunk.getEntityLists();
+
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
+
             // Remove entities
             for (int i = 0; i < 16; i++) {
                 int count = this.getCount(i);
diff --git a/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java b/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
index fd1a708e..590fd9c4 100644
--- a/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
+++ b/forge110/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
@@ -79,13 +79,14 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         Chunk forgeChunk = (Chunk) chunk.getChunk();
         if (forgeChunk != null) {
             int[] otherMap = forgeChunk.getHeightMap();
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -235,7 +236,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
         Map<BlockPos, TileEntity> tiles = (Map<BlockPos, TileEntity>) tilesGeneric;
         ClassInheritanceMultiMap<Entity>[] entities = (ClassInheritanceMultiMap<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ExtendedBlockStorage section = sections[layer];
@@ -265,7 +266,6 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<BlockPos, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
@@ -339,7 +339,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 return false;
             });
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 SPacketChunkData packet = new SPacketChunkData(nmsChunk, 65280);
                 for (EntityPlayerMP player : players) {
                     player.connection.sendPacket(packet);
diff --git a/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java b/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
index 187034a9..1c3bc1fa 100644
--- a/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
+++ b/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
@@ -32,8 +32,8 @@ import net.minecraft.world.chunk.storage.ExtendedBlockStorage;
 
 public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
 
-    public byte[][] byteIds;
-    public NibbleArray[] datas;
+    public final byte[][] byteIds;
+    public final NibbleArray[] datas;
 
     public ForgeChunk_All(FaweQueue parent, int x, int z) {
         super(parent, x, z);
@@ -41,6 +41,29 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
         this.datas = new NibbleArray[16];
     }
 
+    public ForgeChunk_All(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap, byte[][] byteIds, NibbleArray[] datas) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+        this.byteIds = byteIds;
+        this.datas = datas;
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        ForgeChunk_All copy;
+        if (shallow) {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), ids, count, air, relight, heightMap, byteIds, datas);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone(), (byte[][]) MainUtil.copyNd(byteIds), datas.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     @Override
     public Chunk getNewChunk() {
         World world = ((ForgeQueue_All) getParent()).getWorld();
@@ -104,29 +127,6 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
         }
     }
 
-    @Override
-    public ForgeChunk_All copy(boolean shallow) {
-        ForgeChunk_All copy = new ForgeChunk_All(getParent(), getX(), getZ());
-        if (shallow) {
-            copy.byteIds = byteIds;
-            copy.datas = datas;
-            copy.air = air;
-            copy.biomes = biomes;
-            copy.chunk = chunk;
-            copy.count = count;
-            copy.relight = relight;
-        } else {
-            copy.byteIds = (byte[][]) MainUtil.copyNd(byteIds);
-            copy.datas = datas.clone();
-            copy.air = air.clone();
-            copy.biomes = biomes.clone();
-            copy.chunk = chunk;
-            copy.count = count.clone();
-            copy.relight = relight.clone();
-        }
-        return copy;
-    }
-
     @Override
     public ForgeChunk_All call() {
         net.minecraft.world.chunk.Chunk nmsChunk = this.getChunk();
@@ -140,6 +140,9 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
             Map<ChunkPosition, TileEntity> tiles = nmsChunk.chunkTileEntityMap;
             List<Entity>[] entities = nmsChunk.entityLists;
 
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
+
             // Remove entities
             for (int i = 0; i < 16; i++) {
                 int count = this.getCount(i);
diff --git a/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java b/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
index e6184b48..220dc7c2 100644
--- a/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
+++ b/forge1710/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
@@ -76,13 +76,14 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         Chunk forgeChunk = (Chunk) chunk.getChunk();
         if (forgeChunk != null) {
             int[] otherMap = forgeChunk.heightMap;
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -255,7 +256,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 return;
             }
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 S21PacketChunkData packet = new S21PacketChunkData(nmsChunk, false, 65280);
                 for (EntityPlayerMP player : players) {
                     player.playerNetServerHandler.sendPacket(packet);
@@ -296,7 +297,6 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
         Map<ChunkPosition, TileEntity> tiles = (Map<ChunkPosition, TileEntity>) tilesGeneric;
         Collection<Entity>[] entities = (Collection<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ExtendedBlockStorage section = sections[layer];
@@ -315,7 +315,6 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<ChunkPosition, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
diff --git a/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java b/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
index 0c76e114..5eedbfab 100644
--- a/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
+++ b/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
@@ -41,6 +41,27 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
         super(parent, x, z);
     }
 
+    public ForgeChunk_All(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        ForgeChunk_All copy;
+        if (shallow) {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     @Override
     public Chunk getNewChunk() {
         World world = ((ForgeQueue_All) getParent()).getWorld();
@@ -60,6 +81,8 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
             Map<BlockPos, TileEntity> tiles = nmsChunk.getTileEntityMap();
             ClassInheritanceMultiMap<Entity>[] entities = nmsChunk.getEntityLists();
 
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
 
             // Remove entities
             for (int i = 0; i < 16; i++) {
diff --git a/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java b/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
index 7fb00232..fb3fd43b 100644
--- a/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
+++ b/forge189/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
@@ -73,13 +73,14 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         Chunk forgeChunk = (Chunk) chunk.getChunk();
         if (forgeChunk != null) {
             int[] otherMap = forgeChunk.getHeightMap();
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -198,7 +199,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
         Map<BlockPos, TileEntity> tiles = (Map<BlockPos, TileEntity>) tilesGeneric;
         ClassInheritanceMultiMap<Entity>[] entities = (ClassInheritanceMultiMap<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ExtendedBlockStorage section = sections[layer];
@@ -215,7 +216,6 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<BlockPos, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
@@ -285,7 +285,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 return;
             }
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 S21PacketChunkData packet = new S21PacketChunkData(nmsChunk, false, 65280);
                 for (EntityPlayerMP player : players) {
                     player.playerNetServerHandler.sendPacket(packet);
diff --git a/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java b/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
index ff3daf0f..5ef6fb06 100644
--- a/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
+++ b/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeChunk_All.java
@@ -51,17 +51,26 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
         super(parent, x, z);
     }
 
-    @Override
-    public Chunk getNewChunk() {
-        World world = ((ForgeQueue_All) getParent()).getWorld();
-        return world.getChunkProvider().provideChunk(getX(), getZ());
+    public ForgeChunk_All(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
     }
 
     @Override
-    public ForgeChunk_All copy(boolean shallow) {
-        ForgeChunk_All value = (ForgeChunk_All) super.copy(shallow);
-        if (sectionPalettes != null) {
-            value.sectionPalettes = new BlockStateContainer[16];
+    public CharFaweChunk copy(boolean shallow) {
+        ForgeChunk_All copy;
+        if (shallow) {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new ForgeChunk_All(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        if (copy != null) {
+            copy.sectionPalettes = new BlockStateContainer[16];
             try {
                 Field fieldBits = BlockStateContainer.class.getDeclaredField("storage");
                 fieldBits.setAccessible(true);
@@ -99,13 +108,19 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
                         field.set(newBits, currentValue);
                     }
                     fieldBits.set(paletteBlock, newBits);
-                    value.sectionPalettes[i] = paletteBlock;
+                    copy.sectionPalettes[i] = paletteBlock;
                 }
             } catch (Throwable e) {
                 MainUtil.handleError(e);
             }
         }
-        return value;
+        return copy;
+    }
+
+    @Override
+    public Chunk getNewChunk() {
+        World world = ((ForgeQueue_All) getParent()).getWorld();
+        return world.getChunkProvider().provideChunk(getX(), getZ());
     }
 
     public void optimize() {
@@ -147,6 +162,8 @@ public class ForgeChunk_All extends CharFaweChunk<Chunk, ForgeQueue_All> {
             Map<BlockPos, TileEntity> tiles = nmsChunk.getTileEntityMap();
             ClassInheritanceMultiMap<Entity>[] entities = nmsChunk.getEntityLists();
 
+            // Set heightmap
+            getParent().setHeightMap(this, heightMap);
 
             // Remove entities
             for (int i = 0; i < 16; i++) {
diff --git a/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java b/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
index d9f60377..4a5938fc 100644
--- a/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
+++ b/forge194/src/main/java/com/boydti/fawe/forge/v0/ForgeQueue_All.java
@@ -81,13 +81,14 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
     protected BlockPos.MutableBlockPos pos = new BlockPos.MutableBlockPos(0, 0, 0);
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         Chunk forgeChunk = (Chunk) chunk.getChunk();
         if (forgeChunk != null) {
             int[] otherMap = forgeChunk.getHeightMap();
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }
@@ -234,7 +235,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
         Map<BlockPos, TileEntity> tiles = (Map<BlockPos, TileEntity>) tilesGeneric;
         ClassInheritanceMultiMap<Entity>[] entities = (ClassInheritanceMultiMap<Entity>[]) entitiesGeneric;
         CharFaweChunk previous = (CharFaweChunk) getFaweChunk(fs.getX(), fs.getZ());
-        char[][] idPrevious = new char[16][];
+        char[][] idPrevious = previous.getCombinedIdArrays();
         for (int layer = 0; layer < sections.length; layer++) {
             if (fs.getCount(layer) != 0 || all) {
                 ExtendedBlockStorage section = sections[layer];
@@ -264,7 +265,6 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 }
             }
         }
-        previous.ids = idPrevious;
         if (tiles != null) {
             for (Map.Entry<BlockPos, TileEntity> entry : tiles.entrySet()) {
                 TileEntity tile = entry.getValue();
@@ -338,7 +338,7 @@ public class ForgeQueue_All extends NMSMappedFaweQueue<World, Chunk, ExtendedBlo
                 return false;
             });
             int mask = fc.getBitMask();
-            if (mask == 65535 && hasEntities(nmsChunk)) {
+            if (mask == 0 || mask == 65535 && hasEntities(nmsChunk)) {
                 SPacketChunkData packet = new SPacketChunkData(nmsChunk, 65280);
                 for (EntityPlayerMP player : players) {
                     player.connection.sendPacket(packet);
diff --git a/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitChunk.java b/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitChunk.java
index 32cfa94f..be0e9b04 100644
--- a/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitChunk.java
+++ b/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitChunk.java
@@ -10,6 +10,7 @@ import com.boydti.fawe.example.CharFaweChunk;
 import com.boydti.fawe.nukkit.core.NBTConverter;
 import com.boydti.fawe.nukkit.core.NukkitUtil;
 import com.boydti.fawe.object.FaweQueue;
+import com.boydti.fawe.util.MainUtil;
 import com.sk89q.jnbt.CompoundTag;
 import com.sk89q.worldedit.LocalWorld;
 import com.sk89q.worldedit.Vector2D;
@@ -30,9 +31,30 @@ public class NukkitChunk extends CharFaweChunk<BaseFullChunk, NukkitQueue> {
         super(parent, x, z);
     }
 
+    public NukkitChunk(FaweQueue parent, int x, int z, char[][] ids, short[] count, short[] air, short[] relight, byte[] heightMap) {
+        super(parent, x, z, ids, count, air, relight, heightMap);
+    }
+
+    @Override
+    public CharFaweChunk copy(boolean shallow) {
+        NukkitChunk copy;
+        if (shallow) {
+            copy = new NukkitChunk(getParent(), getX(), getZ(), ids, count, air, relight, heightMap);
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+        } else {
+            copy = new NukkitChunk(getParent(), getX(), getZ(), (char[][]) MainUtil.copyNd(ids), count.clone(), air.clone(), relight.clone(), heightMap.clone());
+            copy.biomes = biomes;
+            copy.chunk = chunk;
+            copy.biomes = biomes.clone();
+            copy.chunk = chunk;
+        }
+        return copy;
+    }
+
     @Override
     public BaseFullChunk getNewChunk() {
-        return ((NukkitQueue) getParent()).getWorld().getChunk(getX(), getZ());
+        return ((NukkitQueue) getParent()).getWorld().getChunk(getX(), getZ(), true);
     }
 
     private int layer = -1;
@@ -41,10 +63,12 @@ public class NukkitChunk extends CharFaweChunk<BaseFullChunk, NukkitQueue> {
 
     @Override
     public NukkitChunk call() {
+        // Set heightmap
+        getParent().setHeightMap(this, heightMap);
         NukkitQueue parent = (NukkitQueue) getParent();
         Level world = ((NukkitQueue) getParent()).getWorld();
         world.clearCache(true);
-        final BaseFullChunk chunk = (world.getChunk(getX(), getZ(), true));
+        final BaseFullChunk chunk = getChunk();
         char[][] sections = getCombinedIdArrays();
         final int[][] biomes = getBiomeArray();
         final int X = getX() << 4;
diff --git a/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitQueue.java b/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitQueue.java
index 83f2937e..ab2ea81c 100644
--- a/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitQueue.java
+++ b/nukkit/src/main/java/com/boydti/fawe/nukkit/optimization/queue/NukkitQueue.java
@@ -50,13 +50,14 @@ public class NukkitQueue extends NMSMappedFaweQueue<Level, BaseFullChunk, BaseFu
     }
 
     @Override
-    public void setHeightMap(FaweChunk chunk, int[] heightMap) {
+    public void setHeightMap(FaweChunk chunk, byte[] heightMap) {
         BaseFullChunk forgeChunk = (BaseFullChunk) chunk.getChunk();
         if (forgeChunk != null) {
             int[] otherMap = forgeChunk.getHeightMapArray();
             for (int i = 0; i < heightMap.length; i++) {
-                if (heightMap[i] > otherMap[i]) {
-                    otherMap[i] = heightMap[i];
+                int value = heightMap[i] & 0xFF;
+                if (value > value) {
+                    otherMap[i] = value;
                 }
             }
         }