RE: Interference: replaced everything and still there??
I had the same sort of a problem. I changed everything and never did find the problem. I put in a PCM receiver and had three times the range with the engine running than I did with the engine not running and the PPM receiver. I went ahead and flew. Yes the problem is still there and I would like to know what it is but PCM lets me go ahead and fly. I don't fly it when there is a lot of people around.
An unplugged servo can't do anything if its not banging up against the receiver or something under vibration