From what I remember (may be wrong) the plane was
perfect. The thickness of the wing match the aileron
and the builder molded his own pockets for the aileron.

Another note: The raptor wing is a very heavy wing
weighing in at around 10lbs...
Isobar wings are far lighter and not near as strong.

I agree with Rocketman about its likely for more complex
than what I discribed.

All other planes have ailerons with the same linkage
and there not fluttering. That is why I think its the wing.

Eddie Weeks