Did you set C.G. from LE or TE? A friend of mine got the ARF without the addendum concerning the C.G., and he was totally terrorized from the moment it left the ground. After 10 minutes of utter Chaos, he got the thing to the ground right side up and travelling forward too. After towelling the off the sweat and peeling 12 oz.of lead from the tail, he loved the plane. If it were anyone else we knew flying that plane that day, it would have been powdered for sure.