I had my clutch pack, bearings, ring and pinion replaced under warranty at 35K. I now have 74K and the only problem I have is when I let off and give it gas it gives a jolt when they lock up. I have the 9.75. Is there a replacment TrueTrac for this or is it the Eaton limited slip? Also, does Eaton make a ring and pinion set for the 9.75?