I just purchased the supersports and its almost ready , however i am a bit doubtful about the wing joining , firstly because the plywood wing joiner looks tiny , secondly thers a tiny gap between the trailing edge underside and the fuselage wehn i attach the wing, does the wing hold up good during manuvers?? or do i have to reinforce it one other thing id like to ask is about the engine mount, it appears that it has a little bit of downthrust built in is that allright