I own a ZR900 03 and I think I am going to have to gain some weight to pull this beast over when it gets real cold. I was wondering If anyone has broke there pull rope yet when it was cold. I think I will carry an extra one with me to change it if it breaks on the trail. What does it involve to change one? Can I do it on the trail? My buddy has an ZR800 and has already broke two of them(last season).