I just purchased a Hanger 9 Ultra Stick 40 and would like a recomendation on as engine to use. I am a fairly new flyer and have been flying a Goldberg Tiger 2 with a Super Tiger GS 45. I want to start using 4-strokes now. The box says a Saito 56 works well but also says you can go up to a Saito 72. I plan to build the plane using the optinal flaperon set-up... I don't know if this would require more power. Also I've heard some bad things about using the supplied CA hinges...Does anyone have an opinion on this?