diff --git a/src/main/java/com/hbm/items/machine/ItemRBMKRod.java b/src/main/java/com/hbm/items/machine/ItemRBMKRod.java
index a83ed86c5..01c83055c 100644
--- a/src/main/java/com/hbm/items/machine/ItemRBMKRod.java
+++ b/src/main/java/com/hbm/items/machine/ItemRBMKRod.java
@@ -205,7 +205,7 @@ public class ItemRBMKRod extends Item {
 			double avg = (heat + hullHeat + coreHeat) / 3D;
 			this.setCoreHeat(stack, avg);
 			this.setHullHeat(stack, avg);
-			return avg;
+			return avg - heat;
 		}
 		
 		if(hullHeat <= heat)
diff --git a/src/main/java/com/hbm/tileentity/machine/oil/TileEntityOilDrillBase.java b/src/main/java/com/hbm/tileentity/machine/oil/TileEntityOilDrillBase.java
index 307c87f9e..7ac708861 100644
--- a/src/main/java/com/hbm/tileentity/machine/oil/TileEntityOilDrillBase.java
+++ b/src/main/java/com/hbm/tileentity/machine/oil/TileEntityOilDrillBase.java
@@ -199,7 +199,7 @@ public abstract class TileEntityOilDrillBase extends TileEntityMachineBase imple
 	
 	public int getDelayEff() {
 		int delay = getDelay();
-		return Math.max((delay - (delay / 4 * this.speedLevel) + (delay / 10 * this.energyLevel) / this.overLevel), 1);
+		return Math.max((delay - (delay / 4 * this.speedLevel) + (delay / 10 * this.energyLevel)) / this.overLevel, 1);
 	}
 	
 	public abstract int getPowerReq();