Hi Jason,

I had a remarkably similar problem with my 10x in my Super Reaper, except I was using JR 8231 servos running directly to the rx.

I posted a question here and no one had seen anything like it before. I was getting much more than 20 paces before the servos started moving out of sync. Probably close to 80 metres with the aerial removed, so I figured that while not in failsafe, I was getting good range. I have never had a problem in flight.

I have no idea how this could happen and most here seemed to think I must have had a mix stuffed up that was causing the problem, but I assure you, they would stay in sync until I got a cetain distance away before one started to get out of whack. It was still responding, but just not in time with the other.

Had my radio checked out shortly after and it came back with no major problem found other than needing a minor tune-up.

Mind you, 20 paces is pretty short and I'd get to the bottom of it if I was in your shoes.

Regards,
Garrett