Hello,
Can someone tell me why my plane breaks out of the loop?

Profile Edge 540t, (BTW Great Plane)
Plane is laterally balanced.
Plane does not break to the same side always.
Plane's fuse is banana shaped due to 4th crash but only by 2 to 3 degrees. I think this may be the cause.
50% expo on elevator and ails.
Does not happen with elevator at 10 degrees. But will happen on elevator set to 20 degrees plus.

This has happened with other planes I own.

Thanks all
Speedbird