Im new to the rzr world. I just picked up a 2013 800s and within a week the rear differential grenaded on me. Ive read that is a common problem. I picked up a diff from a 08 model it seems to be a little different but i believe it will bolt up. My question is Ive heard that the 08 diff doesnt have the same issue with the pinion nut coming loose is this true? Any feedback is greatly appreciated. I was thinking about tearing it apart and replacing the seals and bearing and fixing the pinion nut issues if there is one.