Hits
Hi Chris,
It definitely sounds like you've narrowed your problem down to the plane itself. Deifnitely the first thing I would look for is metal to metal contact of any kind. That's definitely what it sounds like. The other thing I would check is antenna routing. Is it inside the fuse, or outside. Is it significantly different routing compared to your other plane?
Other than metal to metal or antenna routing, I can't think of anything else that would be specific to the plane.
The range check with the engine running is essential and very good advise. The difference between engine running should not be more than 10% less than with the engine off. Make sure you check it at full throttle too, not just idle.
Good luck and let us know what happens.
Bill