So...I've been having control surfaces jitter big time, on the bench at full throttle.Suspecting a receiver/crystal problem, I removed the rx and let it hang free from the plane. No jitters. While it was hanging and my engine was at high RPMs, I held the rx and knocked on it with my knuckles...ailerons jittered quite a bit. Swapped with a new crystal......same symptoms. So while it was hanging there not jittering, I pressed it against the bottom of the wing with the engine again at high RPM....a bunch of jittering. Now of course I'd have it in foam normally but shouldn't a rx be ok holding it against the plane? I'm thinking this is telling me I have a bad rx, but I wanted to check with you fine folks....what do you think? Thanks a bunch