I assembled and riveted the left leading edge. I then made the cut out for the landing light. I really didn't want to cut a big hole in the nice skin, but much easier to do it now. It actually turned out pretty good. I had so much confidence after cutting the landing light hole I proceded to cut the access hole for the stall warner. The access hole went fine, but after I drilled the holes for the bracket to hold the stall warner I realized the bracket didn't even come close to fitting correct. After fighting with it for a while I decided to put rivets in the hole's I'd drilled. Not too terrible but I should have just left the stall warner off..