Prob is the plastic diff cases have only 2 screws and they are at the front of the case. Torque reaction flexes everything and the R&P pull apart and "skip" or strip - mine would tear out 3 or 4 teeth at a time. The 3.3 cases added 2 screws at the pinion end, but they're still plastic cases. Its takes strengethening the assembly to put an end to diff probs or at least make diff probs less than an every run occurence.

Once I upgraded to a alum diff cup - flm or maximizer, then the stripping started. Up to that point I was shearing all 4 2mm screws that hold teh ring on the cup. Got old in a hurry!

Sav won't come close without a lot of work.

My bad!! My dumb a** didn't notice you're having prob with a E-Savage!! So sorry.....

Have you checked sav central to see if this is discussed over there??