Originally Posted by Hit N Run
I've triple checked the EZ connectors and they are all socked down very well with ZERO play in them even if I yank on then very firmly. (I even used blue loctite "just for added measure")
Huh. good one. Let's see..
horn is glued in really well?
Do you have rates turned way down in the radio?
Did you re-hinge the ailerons?
Can the ez-connectors rotate in the horns?
is the straight rod (music wire) thick enough not to flex?
You may just be hitting some perfect harmonic frequency. See if you can change the CG ever so slightly.
That's about all I can think of..