More riveting. Having to make shims for the #1 formers to prevent dimpling of the skin. On another builder's website, it looks like he allowed the #1 formers to move up at the bottom ends, as if he had started drilling to the skin at the top and worked down. I drilled from the bottom and worked up. Top down allows the gap to build up at the bottom (where the 1/8" splice plates go) while keeping the former tight to the skin.
