Ok I have had my Pro for a while now. been able to fly ok, here and there have a problem with a vibration, no big deal, usually find it and fix it. this time its bad, I replaced the center hub/spindle which ever its called. Now its ten times worse, its a wobble now, nto bad till i put blades on it and it about shakes the tail off. Tried about 4 or 5 different shafts, all brand new, double checked flybar tack and balance, everything. The head vibrates noticeably with now flybar fins and no blades. Changed the bearings, no help. I think i have changed about everything except putting another new hub in. Trying to use HDX 300 carbon fiber blades, beginning to wonder if that makes the problem worse, cause thats when it tries to wobble the tail off. just got stock wood blades again but dont want to try them cause the vibration is still there. any help woudl be greatly appreciated