ok well my locker was nt working properly so i tore everthing apart and found that the two gears that was side by side where the gear slides over top of them to engage it had a lot of play in it took the bolts out of the ring gear to find out that 2 bolts was snaped and that most of the rest of them was worn or deformed .... what is the upgrade kit consist of and i m going to get new bolts tomm from tri corps or fasten all ...i have another rear end that i am using parts from that the two gears are very tight on