ORIGINAL: nosram
Randy,
Do you think it could be your BEC causing a bit of interference, and causing the servo neutrals to wander. It might be a good idea to check the servo neutrals as you gun the motor. Flying the plane with a seperate reciever battery would prove it either way. The other thing that it might be, if you are using 72MHz and pull pull on the rudder, is the control wires touching and causing a small amount of interference. I crossed my wires, because they would rub on the rear most former. In time they would saw throw the former and them become slack.
Hope that helps a bit,
Nosram
I don't think it could be the BEC, I did a range check and it was rock solid. But if the BEC is too close to the battery, could that cause interference?
I'm on 2.4 so no on that interference.
Keep those ideas coming in...