I just received my mini revo and I've read in the forums that it is important to shim the differential. I purchased the recommend ASC21141 shim set but I have not been able to find in the forums where exactly you are supposed to shim. Does the shim go between the diff' case and the bevel gear (to get a tighter mesh to the diff' ring gear) or on an outdrive to shift the ring gear and diff' laterally.
I guess when I pull it apart it will be obvious but it would be nice to get some clarification before hand.