Better day today. Was able to spend some time off and on in the shop. I finished drilling the tank ribs to the baffle. Again, I wish the skin was NOT prepunched. It would make it less stressful when locating the ribs to the baffle. I also worked on the leading edge skin. I scuffed, cleaned, and primed the skin. After a few hours, I assembled the leading edge, and started banging rivets. Probably 40% done with the riveting when I called it a day.