diff --git a/GamecraftModdingAPI/Block.cs b/GamecraftModdingAPI/Block.cs
index 1a8673a..46fb00c 100644
--- a/GamecraftModdingAPI/Block.cs
+++ b/GamecraftModdingAPI/Block.cs
@@ -71,13 +71,35 @@ namespace GamecraftModdingAPI
 		public Block(EGID id)
 		{
 			Id = id;
+			if (!BlockEngine.BlockExists(Id))
+            {
+                Sync();
+                if (!BlockEngine.BlockExists(Id))
+                {
+					throw new BlockDoesNotExistException($"Block {Id.entityID} must be placed using PlaceNew(...) since it does not exist yet");
+                }
+            }
 		}
 
 		public Block(uint id)
 		{
 			Id = new EGID(id, CommonExclusiveGroups.OWNED_BLOCKS_GROUP);
+			if (!BlockEngine.BlockExists(Id))
+            {
+                Sync();
+                if (!BlockEngine.BlockExists(Id))
+                {
+					throw new BlockDoesNotExistException($"Block {Id.entityID} must be placed using PlaceNew(...) since it does not exist yet");
+                }
+            }
 		}
 
+        /// <summary>
+        /// Synchronize newly created entity components with entities DB.
+		/// This forces a partial game tick, so it may be slow.
+		/// This also has the potential to make Gamecraft unstable.
+		/// Use this sparingly.
+        /// </summary>
 		protected static void Sync()
 		{
 			DeterministicStepCompositionRootPatch.SubmitEntitiesNow();
@@ -219,10 +241,8 @@ namespace GamecraftModdingAPI
         /// Convert the block to a specialised block class.
         /// </summary>
         /// <returns>The block.</returns>
-        /// <param name="sameTick">Force an entity sync when <c>true</c>. 
-		/// Only set this to <c>false</c> when the block was not placed the same tick this was called.</param>
         /// <typeparam name="T">The specialised block type.</typeparam>
-		public T Specialise<T>(bool sameTick = true) where T : Block
+		public T Specialise<T>() where T : Block
 		{
 			// What have I gotten myself into?
 			// C# can't cast to a child of Block unless the object was originally that child type
@@ -233,7 +253,6 @@ namespace GamecraftModdingAPI
 			{
 				throw new BlockSpecializationException("Specialized block constructor does not accept an EGID");
 			}
-			if (sameTick) Sync();
 			return (T)ctor.Invoke(new object[] { Id });
 		}
 
diff --git a/GamecraftModdingAPI/Blocks/BlockExceptions.cs b/GamecraftModdingAPI/Blocks/BlockExceptions.cs
index 47af014..557282a 100644
--- a/GamecraftModdingAPI/Blocks/BlockExceptions.cs
+++ b/GamecraftModdingAPI/Blocks/BlockExceptions.cs
@@ -40,4 +40,15 @@ namespace GamecraftModdingAPI.Blocks
 		{
 		}
 	}
+
+	public class BlockDoesNotExistException : BlockException
+	{
+		public BlockDoesNotExistException()
+		{
+		}
+
+		public BlockDoesNotExistException(string message) : base(message)
+		{
+		}
+	}
 }
diff --git a/GamecraftModdingAPI/Blocks/ConsoleBlock.cs b/GamecraftModdingAPI/Blocks/ConsoleBlock.cs
index b4fcaa4..da9c895 100644
--- a/GamecraftModdingAPI/Blocks/ConsoleBlock.cs
+++ b/GamecraftModdingAPI/Blocks/ConsoleBlock.cs
@@ -21,7 +21,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
 					EGID id = PlacementEngine.PlaceBlock(BlockIDs.ConsoleBlock, color, darkness,
 														  position, uscale, scale, player, rotation);
-					Sync();
 					return new ConsoleBlock(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/Motor.cs b/GamecraftModdingAPI/Blocks/Motor.cs
index 13a246f..8cafccb 100644
--- a/GamecraftModdingAPI/Blocks/Motor.cs
+++ b/GamecraftModdingAPI/Blocks/Motor.cs
@@ -29,7 +29,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
                     EGID id = PlacementEngine.PlaceBlock(block, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
                     return new Motor(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/Piston.cs b/GamecraftModdingAPI/Blocks/Piston.cs
index 1e69df6..2f7064c 100644
--- a/GamecraftModdingAPI/Blocks/Piston.cs
+++ b/GamecraftModdingAPI/Blocks/Piston.cs
@@ -29,7 +29,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
                     EGID id = PlacementEngine.PlaceBlock(block, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
 					return new Piston(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/Servo.cs b/GamecraftModdingAPI/Blocks/Servo.cs
index 1c22d0b..dd2cc52 100644
--- a/GamecraftModdingAPI/Blocks/Servo.cs
+++ b/GamecraftModdingAPI/Blocks/Servo.cs
@@ -29,7 +29,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
                     EGID id = PlacementEngine.PlaceBlock(block, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
 					return new Servo(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/SignalingBlock.cs b/GamecraftModdingAPI/Blocks/SignalingBlock.cs
index d654ca9..9c2f457 100644
--- a/GamecraftModdingAPI/Blocks/SignalingBlock.cs
+++ b/GamecraftModdingAPI/Blocks/SignalingBlock.cs
@@ -29,7 +29,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
                     EGID id = PlacementEngine.PlaceBlock(block, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
 					return new SignalingBlock(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/SpawnPoint.cs b/GamecraftModdingAPI/Blocks/SpawnPoint.cs
index 8fd1fda..b43dffb 100644
--- a/GamecraftModdingAPI/Blocks/SpawnPoint.cs
+++ b/GamecraftModdingAPI/Blocks/SpawnPoint.cs
@@ -31,7 +31,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
                     EGID id = PlacementEngine.PlaceBlock(block, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
 					return new SpawnPoint(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/TextBlock.cs b/GamecraftModdingAPI/Blocks/TextBlock.cs
index a905a6d..f2993fb 100644
--- a/GamecraftModdingAPI/Blocks/TextBlock.cs
+++ b/GamecraftModdingAPI/Blocks/TextBlock.cs
@@ -22,7 +22,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
 					EGID id = PlacementEngine.PlaceBlock(BlockIDs.TextBlock, color, darkness,
 														 position, uscale, scale, player, rotation);
-					Sync();
 					return new TextBlock(id);
                 }
                 catch (Exception e)
diff --git a/GamecraftModdingAPI/Blocks/Timer.cs b/GamecraftModdingAPI/Blocks/Timer.cs
index b31f9f8..a53adf1 100644
--- a/GamecraftModdingAPI/Blocks/Timer.cs
+++ b/GamecraftModdingAPI/Blocks/Timer.cs
@@ -26,7 +26,6 @@ namespace GamecraftModdingAPI.Blocks
                 {
 					EGID id = PlacementEngine.PlaceBlock(BlockIDs.Timer, color, darkness,
                                                          position, uscale, scale, player, rotation);
-                    Sync();
                     return new Timer(id);
                 }
                 catch (Exception e)