Scuffed, Cleaned w/ Acetone, and Primed with 7220. Then back riveted 3 pieces onto Top Skin. At the Upper Aft Fuse Rib, req'd using offset "universal" (I don't have an offset back rivet tool) in rivet gun to reach shop ends. Worked great - w/o bending rib to access. Onto Sect 10-30 LH and RH Top Side Skins. Getting close to completing the Aft Fuse build...
