Anybody else have this happen? Ran buggy first race and it was great I was a full sec. Faster on fast lap and top 5 and 10 noticed my center diff leaking after so I opened it up changed fluid and retightend then it started spinning out all over the track. Started going thru everything and found the diff shims looked like this and my diff was locked up. Took shims out put back together and feels crunchy and stiff.