Originally Posted by IntegrityHndywrk
So i was flying and noticed my tail kicking and assumed it was belt. It ended up being my tail servo going bad. It was my first tail servo to go bad! It went bad while i was inverted and flipping but hey! it was still the original stock servo that lasted like 9 months or something!
The 4F200 stock tail servo is actually okay. I still have mine which still works although I don't fly with it any more. Somewhere I was troubleshooting a AR7200BX tail endpoint programming issue and opted to try a different tail servo (Align DS420) which didn't solve the issue. It was a undocumented AR7200BX/transmitter programming side effect that was the culprit. In the end I just kept the DS420 tail servo installed and flew with it.