the other day i managed to cross thread one of the holes in my 4 bolt mounts in my frame (saracen m.a.d) there is still some thread in there as i managed to put a bolt into it but i should think it will get worse over time when the thread eventually dies what do i do? I could tap a new thread myself but im not sure is there some kind of specialist way of doing it. What is helicoiling by the way, Thanks