After a couple of successful flights today, I noticed my elevators started glitching while I was warming up my engine. Turned off the engine and the problem went away. Each elevator half is on it's own channel, and each one would glitch at different times. I turned the radio off and watched them while in fail safe mode and they still glitched randomly.

Now here's why I'm really puzzled. Last weekend I noticed weird things happening while warming up the plane (engine running). I was using PCM in my JR 8103. Have used it for a couple years problem free. I noticed it mostly on the ailerons. There would be delays in their response and they would hold position. So I thought it was losing signal and going into fail safe (last position). I figured this would give me a good excuse to get a 2.4 spectrum model and new 7 ch receiver. Binding was easy, range test was great, and I had several good flights today, but then it started acting up on the elevators only. Any ideas?? Here is my setup:



BME engine with CH ignition

Ignition modified for 7.4v lipo (no regulator)

Dual 7.4 lipo batteries with 6v regulators for receiver

JR 86100 servos on all surfaces

8103 radio w/ spectrum module

Spectrum AR7000 receiver

Thanks for your help,

Scott