Can anyone tell me why my AJ wants to snap right with full elevator. 70" with dle 30. plane flies great holds lines with virtually no mixing...

the only demon I keep seeing is when doing a loop or trying to pick up a sharp upline the plane wants to snap right... instead of pulling straight up it rolls a 1/4-1/3 to the right and pitches off vertical to the right 15-20 degrees.

Its quite consistant with this... and bugs me the most when finishing a loop or trying to square something off... is this a mixing issue, cg, surface, servo issue? kinda confused on how to fix it.

I'm assuming its stalling at high g load... but Ive had planes that you can pull as hard as you want and they don't kick out like this...</p>