RE: Hitec Fusion 9 receiver...
I usually range check all my airplanes before I fly them, and I do it the same way. The fusion is the only receiver that has had a problem. Of course, it's also the only synthesized receiver I own as well.
Before I fixed the muffler problem, the glitching was only evident on two channels, throttle and one flap. There was no twitching, they would drive to one side of their travel and stay there. No control over any other surfaces. Now, I notice actual twitching of all the surfaces, and you can hear the engine's rpm's varying. I switched to another receiver last night and will try it today.
I bought mine from my LHS and I don't think they have another one yet...
Andy