well i was playin around with my fun51 today. it was windy, but i don't think that was the cause. anyway, i have all my throws set on "rediculous". it is fun to fly it like that. here's the question. i was playing around doing knife edge circles. trying to see how tight i could get them. they get pretty small, but i reach a point where the plane will suddenly snap out of the ke. so i tried doing loops and tightening them up smaller and smaller. again it seems when i get to the point of a ton of elevator the plane snaps out of the loop. I had a good look at the elevator on the ground afterward and it is a one piece elevator. both halves are moving the same amount of deflection through the whole range of motion, there is no flex in the control rods (nyrods that are braced to the fuselage with landing gear straps) if i give it a ton of left aileron (always snaps to the right) when it snaps out I can correct it, but only if i am gradual adding elevator. it happens too fast if i give it a yank.

so the question is... am i just reaching the point of so much elevator that the horizontal stab is stalling and causing it to snap out of line?