Originally Posted by
lynakafaith
I have the 46 tooth Metal spur in mine and it was to Big, but i lifted the center diff with one shim under each hole. Can i do it so?
I don't think it would cause a problem as long as the shim used are thermally conductive (steel or aluminium). You must think about motor heat dissipation through the chassis is on of the main way
Why don't you dig locally the chassis under the spur gear instead?