Hobbico Avistar C.G. Range...
I had the same problem with mine. It flies great with the OS46FX that I mounted, but there is enough lead in the tail you can use it as a weapon. During training, the tail was broken off on one of my better take off's. Pulled back on the throttle when it was about 5 ft off the ground instead of the elevator, snapped the tail right off when it hit. Was able to fix it and have used it for the last year. Still have the weight though.