I bought this plane a few months ago and also purchased the recomended 400T motor. The plane was great but the motor is just enough to fly the plane, had to use full throttle most of the time just to keep it in the air .I was using a apc 9X6 sf prop as recomended with a 25 amp sc. anyway I have since upgraded to an E-Flite park 480 1020kv motor and an 35 amp sc and need some sugestions on prop size for sport arobatic flying NO HOVERS. thnx.