I always do the math on the CG location listed in the instruction booklet. The instructions for this biplane indicate the initial CG location be set at 5.5" aft of the leading edge of the top wing. I did the math to set the CG at 27% and the balance point is 4.0" aft of the leading edge.
If you balance this plane at the suggested location it would exceed 33% and most likely snap roll on liftoff. Am I wrong? Please offer assistance.