How much does it weigh with the G-23? I was intrested in these planes but I didnt know anything about them so i went with the H9 33% sukhoi (its on its way here now). My suggestion is even though your servos throw the same on the ground they might now throw the same in the air. The airforce over the control surface could be causing one servo to stall. I dont know where the balance is on that plane but if your using a G-23 I would find it hard to beleive that the plane is tail heavy b/c the G-23 is a heavy motor (when compared with a saito 1.50 or 1.80). I know the kit suggested this motor but with the additional weight it could be creating a high wing load. Does the plane have a tendency to snap out with you when you get too slow?