I decided to press on and get this leading edge as much complete as I can. I used straps to hold my tank skin in place while I carefully drilled the spar rivet line across the top. I used my #40 duplicator to find the holes and it worked perfectly. I'm pretty much as complete as I can get with this until my #20 hole duplicator gets here in a day or two. I had already drilled #20 holes in the ribs and bottom spar caps that I now have to locate on the new skin. No problem.