As long as the wing is tight in saddle areathen there is not much you can do about but that is common(if memorey serves me tight).and depending on the motor and how fa out you have it yo might have to cut thr cowl out a little so it goes all the way on.
The plane fies good but does have a tip stall to it on finale but a little extra air speed on landingncures that.

http://www.waynelyn.com. it's a smal site but is growing everyday.