My 2013/14 is in the shop right now, for I suspect, the out put shaft bearing. (7,300 miles) And the only complaint I have about my Rocket from day one, is the "slop" in the drive train. It had something like 24 miles on it, when I bought it. So I don't know if those 24 miles was from people trying to do wheelies, or what? And for the life of me, I can't understand how that damper spring thing works? Does it compress end to end, or does it twist? I know after I picked up a bad vibration, if I put it in first gear, engine off, and rocked it back and forth, there was about 2 to 3 inches of "slop", and a clunking, loose, noise from the area where the U-joint is. Also my final drive (2nd one by the way), was showing signs of not being happy, moist with oil, enough to be collecting dust/dirt. Have not heard from dealer yet.