All I can say is CG can go back 1/2 to 1 inch past with no problems. Servos 605BB on rudder and aielrons, 2 425BB on the elavators. I have my elavator servos in the back inside the fuse works great.

Anybody that can't get thier servos to center is their own fault. I'm not saying this in a bad way it's just a fact. The reason why the servo won't center is because of slop in linkages and control surfaces that don't move perfectly with no binding at the hinges.

Mine is powered by MDS 1.48 with apc 17-8 prop. Landing gear plate is a little weak and aielron mounts in the wing need epoxied. Other than that plane flys great. Hanger 9 should have never stopped production on such a great plane.