Hi All,I am planning on building the Project Extra designed by Mike Hurley, published in MA about 5 years ago. It has a span of 106" and is powered by a 100 cc twin. I am wondering about the wing airfoils. It has a 14% wing root and a 12% wing tip airfoil. It seems to me that this would encourage tip stalling. I would think the tip should be thicker than the root. What do you guys think?Jim