diff --git a/core/lib/ucore.jar b/core/lib/ucore.jar
index 407d15d559..b1a266e30d 100644
Binary files a/core/lib/ucore.jar and b/core/lib/ucore.jar differ
diff --git a/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java b/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
index 61c5ca3744..e9229ca956 100644
--- a/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
+++ b/core/src/io/anuke/mindustry/world/blocks/ProductionBlocks.java
@@ -1,6 +1,10 @@
 package io.anuke.mindustry.world.blocks;
 
+import com.badlogic.gdx.graphics.Color;
+import com.badlogic.gdx.utils.ObjectMap;
+
 import io.anuke.mindustry.Inventory;
+import io.anuke.mindustry.Renderer;
 import io.anuke.mindustry.Vars;
 import io.anuke.mindustry.resource.Item;
 import io.anuke.mindustry.world.Block;
@@ -38,6 +42,8 @@ public class ProductionBlocks{
 	}},
 	
 	router = new Block("router"){
+		private ObjectMap<Tile, Byte> lastmap = new ObjectMap<>();
+		int maxitems = 20;
 		{
 			update = true;
 			solid = true;
@@ -46,14 +52,32 @@ public class ProductionBlocks{
 		@Override
 		public void update(Tile tile){
 			if(Timers.get(tile, 2) && tile.entity.totalItems() > 0){
-				tryDump(tile, tile.rotation++, null);
+				if(lastmap.get(tile, (byte)-1) != tile.rotation)
+					tryDump(tile, tile.rotation, null);
+				
+				tile.rotation ++;
 				tile.rotation %= 4;
 			}
 		}
+		
+		@Override
+		public void handleItem(Tile tile, Item item, Tile source){
+			super.handleItem(tile, item, source);
+			lastmap.put(tile, (byte)tile.relativeTo(source.x, source.y));
+		}
 
 		@Override
 		public boolean accept(Item item, Tile dest, Tile source){
-			return true;
+			int items = dest.entity.totalItems();
+			return items < maxitems;
+		}
+		
+		@Override
+		public void drawPixelOverlay(Tile tile){
+			
+			float fract = (float)tile.entity.totalItems()/maxitems;
+			
+			Renderer.drawBar(Color.GREEN, tile.worldx(), tile.worldy() + 13, fract);
 		}
 		
 		@Override