The good news is I do not have to worry about vibration problems anymore. The bad new is.............need more spares.......................lots of spares. My fault. let the heli get away from me. To high, to far away and lost orientation. Still I did manage to get it back to my own plot. Another 5 feet and I would have recovered. LOL. So question is can I convert this helicopter to a TT?. Spares needed amongst other. New feathering shaft, new blades, tail and main, new tube, new tail unit. Not to bad really. Cheers