Hey Mike,
I'm convinced the plane has a radio problem also. The owner said the plane was being 'swamped' by the TX. The TX has a short antenna and I have never seen them used before. During the preflight, with the engine at full throttle- the control surfaces had a mind of their own. When I walked about 10' away, I now had control. It happened only at full throttle. I did tell the owner he has a definate radio problem, he doesn't agree. Mistake/lesson #5- Don't let someone else convince you it is OK when it is questionable.

No criticizm taken, hope others may benefit.

MikeB