..I'll get this back on topic! I haven't seen any updates, anything new?
I would like to add that your drive shaft u-joint could be bad.. did you look over it? A bad u-joint will cause these issues.. I have the same issue, but haven't replaced anything yet. I think I may just replace the entire drive shaft right away to avoid false diagnosis. My guibo looks good, I'll drop the exhaust and look at the u-joint and CSB. I'll keep updated, but I would recommend testing your u-joints by lifting your car, putting it in neutral and trying to twist your drive shaft. If it has ANY play in the u-joint, that is supposed to indicate failure.
Sent from my DROID RAZR MAXX
RL Ultimo Coils, Status Gruppe links, Meyle CA(B)'s, 95a RTAB's, UUC 5sp Mounts, BMW Performance SSK, Jaffster, headers, CAI.