We turned the wing around on the stand to work on the bottom. This revealed my angle bracket on the outboard rib (made of 1 x 1 aluminum angle) to be slightly too short to sit on the stand well with the top skin on. I moved the jack to the end of the wing, removed the bracket and made a new one from some 1 1/2 x 1 1/2 stock left over from making the wing stand. This bracket gave a good surface to clamp onto the stand. I re-squared the skeleton and Frances helped hang the bottom skins. I cleco'd on the skins and stopped for today.