My son did the first and second flights, had problesms with the engine overheating (new OS .46 that only had burned one tank of fuel). It flies like the unmodified one, only that it can slow down much more for for landings and the glide ratio is shallower. itl does tip stall if it slows down too much. Atached some pictures of my Lancair with the mods (the one with the black stripes at the wing root.