I do not post the stuff I do on here often but this one might give some of you guys aheads up, while I was rebuilding the rear for my Cutlass I ran into a poorly made bearing race as you can see in the photo. Now I have done hundreds if not thousands of rear ends and I have never had this happen before. When I pressed the bearing on to the pinion I duplicated the .025 shim that was on it to get a starting point, when I checked pinion depth I was off by over .090! the pinion to deep in the housing. So I took everything apart cleaned it, removed the shims, and was still off by .068, after cursing at it for a bit I decided to set up the solid pinion spacer and found I was again off by .068 from what I thought it would be so the outer bearing was fine. Then I pulled the races and found what you see in the pictures, bought another race and it went together fine with a .018 shim on the pinion. On other assembler forums I warn guys about using "dummy bearings" for set up to save pressing them on and off, this more or less shows why. Always check everything, it's all mass produced garbage in the end