I am not talking about the mesh inside the diff, but the mesh of the ring gear (big gear outside diff) and the gear going into the front of the diff case that the center driveshaft goes into. You can shim that too with the spacers. I had mine on my monsoon starting to skip on those gears and took one shim out from the opposite side of the ring gear and put on on the same side of the ring gear and in made the mesh alot tighter and fixed the problem.