I belive mine are shot, I was able to turn the driveshaft about 30-40 degrees back and forth. I pulled out the diff and the backlash is at .010. I am able to grab the axle shaft in one hand and turn the splines about 20 degrees and it seems like alot of play. The car sounded like a tire was rubbing when taking slow turns with the clutch engaged, it I pushed the clutch in around a turn there is no noise. I have eaton posi and 4.10 gears with stock spline count.