Well I didn't get the driveshaft installed till today. I was surprised to see that the small bolts that bolt the rear flange of the driveshaft to the pinion flange of the rear diff, were all loose. I am the one who installed the last driveshaft, and I know I didn't leave them loose. The only thing I can think of is, with the DCCD set for running primarily RWD, maybe the shock load cause them to loosen up over time. have never launched the car or anything like that, but it's the only thing that makes any sense to me.