I think I broke mine.
I was switching out the grips to the heated ones I bought with the bike. The left side came off no problem. Didn't even need to cut it. So I tried the same on the throttle side, not so much... I twisted it clockwise a little too hard and felt and heard something snap. Now it will do a 360 rotation. It seems to still retract back to the idle position, but I'm not exactly sure what I screwed up.