Tonight I primed the replacement vertical stabilizer spar parts…
…and I also decided to lightly scuff and prime along the rivet lines inside the skin:
So I was all set to start riveting this baby together, when my Avery lightweight air coupler somehow came apart.
Of course one of the five little steel balls rolled off into a dark corner somewhere, so even if I could get the stupid thing back together, it probably wouldn't work right. Oh well, a new one is only six bucks, and I was going to pick up a few other things anyway, so back to the Avery website we go.