diff --git a/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterFirebox.java b/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterFirebox.java
index 729640995..c58b395e0 100644
--- a/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterFirebox.java
+++ b/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterFirebox.java
@@ -72,11 +72,12 @@ public class TileEntityHeaterFirebox extends TileEntityFireboxBase implements IC
 		return new ContainerFirebox(player.inventory, this);
 	}
 
-	@SideOnly(Side.CLIENT) private static ResourceLocation texture = new ResourceLocation(RefStrings.MODID + ":textures/gui/machine/gui_firebox.png");
+	@SideOnly(Side.CLIENT) private ResourceLocation texture;
 	
 	@Override
 	@SideOnly(Side.CLIENT)
 	public GuiScreen provideGUI(int ID, EntityPlayer player, World world, int x, int y, int z) {
+		if(texture == null) texture = new ResourceLocation(RefStrings.MODID + ":textures/gui/machine/gui_firebox.png");
 		return new GUIFirebox(player.inventory, this, texture);
 	}
 
diff --git a/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterOven.java b/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterOven.java
index db252f124..2deec61e8 100644
--- a/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterOven.java
+++ b/src/main/java/com/hbm/tileentity/machine/TileEntityHeaterOven.java
@@ -96,11 +96,12 @@ public class TileEntityHeaterOven extends TileEntityFireboxBase implements IConf
 		return new ContainerFirebox(player.inventory, this);
 	}
 
-	@SideOnly(Side.CLIENT) private static ResourceLocation texture = new ResourceLocation(RefStrings.MODID + ":textures/gui/machine/gui_heating_oven.png");
+	@SideOnly(Side.CLIENT) private ResourceLocation texture;
 	
 	@Override
 	@SideOnly(Side.CLIENT)
 	public GuiScreen provideGUI(int ID, EntityPlayer player, World world, int x, int y, int z) {
+		if(texture == null) texture = new ResourceLocation(RefStrings.MODID + ":textures/gui/machine/gui_heating_oven.png");
 		return new GUIFirebox(player.inventory, this, texture);
 	}
 
diff --git a/src/main/java/com/hbm/tileentity/machine/TileEntityMachineCentrifuge.java b/src/main/java/com/hbm/tileentity/machine/TileEntityMachineCentrifuge.java
index 43254da96..2f56a8feb 100644
--- a/src/main/java/com/hbm/tileentity/machine/TileEntityMachineCentrifuge.java
+++ b/src/main/java/com/hbm/tileentity/machine/TileEntityMachineCentrifuge.java
@@ -151,7 +151,7 @@ public class TileEntityMachineCentrifuge extends TileEntityMachineBase implement
 			speed += Math.min(UpgradeManager.getLevel(UpgradeType.SPEED), 3);
 			consumption += Math.min(UpgradeManager.getLevel(UpgradeType.SPEED), 3) * 200;
 			
-			speed *= Math.min(UpgradeManager.getLevel(UpgradeType.OVERDRIVE), 3) * 5;
+			speed *= (1 + Math.min(UpgradeManager.getLevel(UpgradeType.OVERDRIVE), 3) * 5);
 			consumption += Math.min(UpgradeManager.getLevel(UpgradeType.OVERDRIVE), 3) * 10000;
 			
 			consumption /= (1 + Math.min(UpgradeManager.getLevel(UpgradeType.POWER), 3));