Mod #4 here for ya. I didn't like the idea of a draggy flat wing tip, so I changed it up a little bit. I have to fibreglass the center of the wing, and will probably do the same to the tips, since they are so delicate, I'm thinking about glassing the whole wing and painting it- maybe even the whole plane. What say ye? Good news! I found a Dave Brown .10-.15 engine mount that will just barely accomodate the .15 CV-A, and is small enough to fit on the miniscule firewall.