Did you use connecting rods on the ailerons, and if so, what are the measurements, because if you use the instructions, they don't work. I used the measurements suggested on Post #161, and got closer to the proper throws.
An easy way to balance this model. Drill a small hole at the CG through the top wing at the center. Thread a length of fishing line heavy enough to take the weight of the plane through the hole and through a small plate ( Drill a small hole in the center of a piece of 1/8"X1"x1"plywood ) and tie the line to something such as a piece of 1/8"x1"dowel to keep the line from pulling through the plate. Suspend the model from something capable of holding the model. You are now able to balance it every which way you like.
After I was done, I put a small screw in the holes and dabbed some whiteout on the screws.