I have replaced the wood with a carbon fiber tube, it still snaps to right very easly. You are right about the elevator halfs. They dont move the same. at the max. distance they travel I always find 1-2 mm differance. I will not use 2 servos for this since the plane is already heavy. Mine wants to snap when it is slow or when I take off. So does it have anything to do with the angel of the engine.

Still I want to see your result with 2 servos.

Good luck and regards.

Zafer