Primed the inside of the skins and all internal ribs and light bracket parts.
Assembled the left LE ... cleco every other hole. Riveted skin to ribs using a hand squeezer where it would reach and then the gun at 35 psi and a tungsten bucking bar for the rivets. Did half the rivets on each side, held in place with rivet tape. Removed clecos, placed rivets and secured with tape and finished with the gun.
Overall, the rivets came out very nicely, with no pro-seal "lubricant" to muss up the setting process.