k i've got how to do back lash and all the rest of this fun diff work stuff. Now in the unfortunate event of the bearing spining on the pinion it took the factory shim with it as well. I've got a shim kit on the way. but my question is how do i know what shim to put back in it? if i had the factory one i could eyeball that but i've got no clue where to start cuz the factory shim got eaten by the diff. thanks in advance i'm almost done finally and this is my last snag.:confused: