Does anyone have any experience with Helicoil inserts or know of any shops that will re-thread a crank arm using them? A friend of mine stripped one of her crank arms at the pedal and sent it back to the manu. but I doubt they'll do anything for her (it is IRO so you never know, he's pretty good about... well... just about everything) so if it comes back I wanted to try to have it fixed.