thanks for your input, went from 3/4 inch of cabin to the aileron, they work perfect, I have a 8103 radio and tried flaperons.... they dont work , caused it to go into an instant 90 deg. dive. with the flaps it pitched up like its supposed to, easy modifcation on a h9 80" piper cub and well worth the extra work. 5 deg take off works great, with only 15 deg for landing its noticeably slower havent tried any more than that yet.