I recently had my local dealer, Bob's BMW, replace the rear roller bearing and tapered bearing in my K1200LT. I disassembled the unit and took the complete unit to them and reinstalled the unit myself. Everything feels great, smooth, no play, and very quiet. However, when I chop the throttle or down shift, the rear of the bike jumps to the left. It is very noticable and disconcerting. Bob's said bring it by and they would check it out. Has anyone had this problem? It did not do this prior to the bearing replacement.