Hello; I have built 3 of these wonderful planes, After the first one I added cap strips to the ribs from the spars to the leading edge. I did this at first to give the covering some thing to attach to, but it improved the flying characteristics of an already good wing. I also put tri stock gussets along each side of the vertical stab to reinforce it. The first one I built, I covered in the Extra 300 pattern blue with red and white, it looked very good. I wish I had one now.