I test flew my Stearman today and it flys great! I have a Zenoah G26 on it and it balanced perfect right at 5 1/2 inches. I used the Dubro air filled wheels and had no bounce. I did go with the four aileron servo hook up because I just could not get the correct throws and the right hook up with that aileron connecting rod no matter how much I tried. With the four independent servos on the ailerons I was able to get the exact throws and boy does it roll nice and fly scale. I'm very happy with it. It is very stable in the air and very controllable.