My polaris mirror was not holding since the dealer put a new set of hot grips on. The hot grips were a bit longer than the handle bar so the mirror was not grabbing well. It actually fell off during a ride in the fall. Not good to ride without a mirror.
I have since relocated the mirror on the front rack extension. Check it out. I think it will be good to go now.

 

only 1 thing. the bike is too clean lol. i was going to get one of those in the handle bar ones but was worried about that and eay to break off the way i ride,