I just purchased an Alpha P-47 foamie from Hobby Lobby. I am having difficulty in assembling it. I have 2 questions: 1) Which servo is best for the ailerons Hitec 55 or 81 and how is it installed, inverted in the wing??? 2) How do I attach the canopy/hatch since the system does not work well, the wooden support glued on the fuse is flimsy and does not work. How would I change the set-up either using velcro, magnets or another method. I have assebled and built many planes but this one puzzles and frustrates me. Any help would be greatly appreciated? Thank You