ok i need some help with this dam heatshrink stuff that goes on the tail control rod,,so far ive had 3 attempts at it and they have all failed,,i cant seem to get it on without any air bubbles and popping them and reheating doesnt seem to work,,even when it looks good with only a couple of very minor bubbles its just to tight through the guides and yes im letting it cool down for half hour b4 trying it,,ive got to the point im thinking of fitting a rod and guides from anothet heli