hey there Waddy,
I looked over the pics you sent me and I think I figured out the problem. You have the wings build with a beautiful curved leading edge. however, the wings also seem to have a curved underside as well. The Cub had a nearly flat under-wing surface. When I built my L-4, I actually scored the line on the leading edge from where the flat bottom stops and the airfoil shape starts. Doing that will help keep the wing flat for attachment to the fuselage. Not that you really want to build another wing again