I would have someone else check out how it's flying before running out to by servos you may or may not need. What's you skill level if you don't mind me asking? If I owned that heli the only servo's a would use would be a Futaba 9202 or whatever is equivalent to that in a JR. A scale heli will tend to be a bit heavier and more susceptible to wind, thus it will req's more stick work to maintain a steady hover.