The material it is made of is the problem. The sides of the fuse are ply, and the sticks, well don't really look like balsa. I agree with the motor switch. My Rossi needed two ounces of lead in the nose to be anywhere near flyable. My CG ended up about 1 inch aft of where the wing leading edge sheeting stops. A 61FX with a 13x4 would be nice.

Also, I agree that the Crap-O-Kote has got to go. Don't add too much weight there either. Keep it simple. No layers on top of lawers.