De-burred the holes, sanded the edges, and scuffed the 5 flaperon arm brackets the 3 tank Z angles, both the inboard and outboard rear spar channels, rear spar trailing edge root doubler, root doubler, rear spar channel splice, rear channel strut bracket, and inboard rear spar channel. Primed all these parts and the remaining nose and trailing edge ribs with the epoxy primer. Before spraying wiped the parts with the waterborne wax and grease remover and wiped parts with a silicone free tack cloth.