My nexStar had a problem with wing incidence being off two degrees negative and corrected by shimming the wing mounting and its at three quarters postive degree and it flys beautifully now before it was so hard on take offs and not flyin smoothly in the air. I used a great planes laser incidence meter and its works nice. Its best check that with a new plane. It was too late for Me to return it to hobbico for a replacement plane. Now gone about three gallons of nitro fuel and flies like a charm. NexStar is a great plane to work with when I crashed it big time tore off landing gear after a hard landing and rebuilt firewall. Happy landings Everyone