I have had two of these go out on the throttle of one of my big planes. And I have went through several of the 225's as well all on the throttle channel of various planes. All the while Smallfly has had several 225's, and a 5245, and hasn't had any problems with any of them. Go figure?? I know the gear train will not take to much tail tapping abuse however as that is the only problems Smallfly has had with his. I think he has went through at least two rudder servo gear sets.