Originally Posted by therabidweasel
Spider gears is my bet.
Agree 100%. That was the same exact scenario when I broke my 10 bolt spider gears. A hard 1-2 powershift and bang. I wasnt able to get just the spider gears for the diff. Had to get a new casing that fit the gears. Broke that too. Hence, the 9". If your gonna keep the 10 bolt, upgrade to something stronger like a detroit locker or even a spool. Only way to really make a 10 bolt last any amount of time. Good luck with the repairs.