Lined up leading edge inboard skin with spar, ribs and foreward channel. Drilled foreward holes in inboard trailing edge skins where they met the spar first. The trailing edge of the foreward skins overlap the leading edge of the trailing skins. The foreward skins had pre-drilled holes where they meet the front of the spar. I lined everything up based on these holes and the rib centerlines. The foreward skins are laid under the trailing ones for drilling, but will lay on top for final assembly. Drilled and clecoed all holes. I underdrilled with A4 rivets first. I will upsize to the A5 rivets later.
