Steven, The pictures of the wing you say are just pinned to check the fit. I hope you realize that the ribs are upside down. The trailing edge does not get pinned to the building board, just the spar. Then the ribs go on the spar with the rear tabs down. This sets them level with the building board. Then the rear edge sits on top of the tabs. After the wing is further along in constuction, these tabs get cut off. If you already knew this, then I'm sorry for the butting in here, but if not, I would hate to see glueing take place & the problems that would transpire from doing so. I had a Goldberg "SKY TIGER" many years ago & I put flaps on it as a trail to see how well I liked them. Best plain I ever had short of an Ultra sport. Good luck with the build. Looks good so far. Bill