Continued with Horizontal. Clecod all ribs and stringer web assy to front spar. Riveted all ribs and both end ribs to front spar. Continued with 8-11. Setup the four cradles and put the wing skins inside. Clecod inner ribs to both left and right skins and riveted per plans. Used a Puller type dimpler on the skins where I couldn't use the DRDT2. Works very well.