LT 40 would be perfect fot that motor. It does have ailerons though. What is it that is giving you problems with ailerons? We would be glad to help with any problems. There are a few tricks these guys could clue you in on I'm sure. One is to use the hinges with the metal hinge pins and pull them out , slide one long sames dia. piece of MUSIC WIRE for each wing in and fasten it securely with a piece of iron on covering at the wing tip ( requires a small 90 degree bend in the wire). This is an old trick that allows the aileron to be removed for repairs. JUST IN CASE also using some extra covering or clear covering to seal the hinge gap from the top can look nice and improve function.