I have the 9C (not Super) that does not center the elevator servos with up elevator inputs. Down inputs center okay. When giving up elevator commands the elevator will then center below center, giving down to the elevators. This has been going on for over a year, but I originally thought it was binding linkage on another plane. Just built a new kit and found the problem again. It did this with 2 different servos on the older plane and now the new servo on the new kit. The new kit has all new gear, receiver, batteries, servos, etc.

I took a new S3151 and anchored it with a long control rod secured to the heli servo arm. I then measured how the radio centered the servo and it does the same thing with a third receiver.

I'm kind of mad that I didn't catch what was really wrong while the radio was in warranty. Wondering what is going on with the radio. The other channnels seem to be okay.