For those of you who have read my threads you know that I've recently maidened an Extra 300 .60. I've noticed however, that the plane behaves really odd when I give it more than half elevator on high rates during a turn. I start to turn left, I let the plane drop the wing until it's almost perpendicular to the ground and then proceed to add elevator to make the turn. As soon as the elevator input exceeds about half travel, the plane violently turns to the opposite side to which I'm turning as if it was on an autopilot system leveling the flight or something. If I input even more elevator the plane sort of snaps. I can't really figure out what's going on. The CG is as instructed by the manual, but it could be slightly aft. Anyone who has flown this type of aircraft have any idea?