Installed the lower skin (inner and outer) on the left wing. Drilled #40 and clecoed the skin to the ribs and spars. Drilled, and attached the flap hinge to the bottom of the wing. Spent about 4 hours installing the Dynon pitot tube, with AOA to the wing using a Van's RV stand-off. Located it at the intersection of rib #8 and #9, as there is an inspection panel here which will make it easier to inspect and maintain the static system. I had to fabricate a backup plate for the tube as the joggle was only about 0.050" and the Panther spar is 0.125" thick. The Van's RV tube is riveted to the spar and the skin, and is very solid. Originally I thought I'd include a right angle brace to the #9 rib, but after drilling and clecoing, it's obvious that it doesn't need any more support.