@ abufletcher: Boy do I wish i read this post back in Jan.'16! I have lost 2 H9 Pulse 60's w/ a OS 75AX. I thought it was pilot(my)error that spun them in. On the new 3rd one, I gave it to an experienced club pilot to trim out. He noticed a wing drop in flight, but corrected. When he came in to land, he was straight and level on approach, and the the plane suddenly snapped (spun). No time for corrections. Fortunately it was on soft shrubbery, so it was on;y a broken fin/rudder, I was lucky!
Funny, I had bought a new RX for the radio, thinking that it may have been the prior culprit. Also, the ailerons are fine on the ground, and in the air, before the plane inexplicably drops a wing with no warning. I had thought I was the one who might have over-corrected or at fault.This has spooked me!
As you know, SerpentAmerica out of Doral, FL. now handles all Sanwa warranties. They send the TX back to Japan at no charge other than down time. Should I bother? I have the high torque Airtronics servos in the plane and a new RX. Should I just forget about this RDS8000? i haven't pulled the back cover off yet, but I doubt it's a broken wire,as all functions operate smoothly on the ground. And...I have another plane (Midget Mustang) with another Airtronics RX in it that seems just fine. Your advice would be sincerely appreciated, as this is driving me crazy!