[Adger Smith]

Larry I always set the pinion depth a little deeper into the ring gear to make them last. The 12 bolt deflects so much it will actually move to a more correct patter in use. I also set the back lash a tick tighter. Doesn't give a good pattern but the small pinions will last and not fold over as quick. I assume you do away with the crush sleeve and use a solid one, Aye! OH and I don't use shims behind the pinion bearing. I have seen them have a nasty habit of coming out on decel at 8600. Shim behind the rear pinion bearing race & case.