1) Cleaned and primed ribs and spars for H/S 2) Cleaned up paint gun... then realized I forgot to prime the rear spar stiffeners and the skins! 3) Cleaned the rear spar stiffeners and the inside of the H/S skins. 4) Got the paint gun ready to prime again... then managed to spill all the primer I put in the gun! Arghhh!!! 5) Primed the rear spar stiffeners and the H/S skins. Primed the skins due to scratches when putting the ribs in place - better to be safe! 6) Cleaned everything up and will let the primer sit overnight.