Huh I wonder when they started doing that...nothing like preventing people from sharing to make a forum better...sheez. I just looked at Outerzone and the new pictures don't help much. it appears that whoever built that one just made stuff work. The top surface of the bottom wing is a curved airfoil and the nacelle formers were designed to have a flat ply motor mount for glow. if you install the formers first where it appears they should be you can't add the mount. If you put the mount on first then the bottom of the formers are in a straight line