Dan, Thank you very much for your kit. Great work! TB rattling has gone. To get old bushings out, I used M10 screw tap. In the kit (for 1150GS), there are 4 small O-rings - where should they fit? I used two of them on air bypass screws (?). I have no locknuts (1150GS) on shaft (pulley side) - I used small hex screw and aluminium washer from kit as locknut - but there is small play between pulley and shaft. Any advice how to fix it?