We have 2 recievers R603FS, both do the same thing, we ususlly ran a Airtronics 947358 for throttle, and JR 9100S for steering, and the 947358 just stopped working at the track, and we bought a Hitec 985MG, brand new and we have the problem with it. Today we bought a XP digital DS 1015, and it works great. We did try all modes HRS, PCM, PPM with a new set up and rebind every time with the same results. I think I'm gonna have to talk to Futaba for what its worth