Larry, the CG on the plans is at the rear edge of the spar, but in our club we found that to be very conservative. I balanced mine 3/8th in back of that and liked it that way, and I'm convinced I could have moved it back further. A radio failure caused a flyway. I'll build another next winter. Balance right side up. Great flier--very easy in the air and on the ground, but very capable too. The perfect second plane. Jim