My skybolt, if I remember correctly balanced at the LE of the bottom wing. I had an OS 61fsr abc with a pitt muffler. The servos were at the center of the bottom wing with the battery at the CG. Hope I've helped some. Did I read correctly, you said it had a pound of lead in the nose? Is it covered with monocote or painted? Mine was monocoted. Wish I still had it.