The shifter on my cr125 became loose and stripped. After trying ti reuse it a few times ingot another one off my buddy. The splines were a little wore but not much. After a ride that shifter to became loose. I keep re tightening it but its usually loose before i get back from a ride. The splines on the cast part from the motor seem to be fine. The very end twists a little. I think this is causeing the shifters to screw up. I have a new ims shifter coming in the mail and dont want to ruin it only to find out the motor piece is screwed. Is it common for these to twist ? Or do you guys think the shifters i had were just wore out? Ill post a pic soon.