Had a 0600 flight student, but other than that and taking RJ to work at noon, I spent the rest of the day in the garage with the door up. Constantly amazed by how crazy the Kansas weather can be. Last week it was down in the teens overnight and today it was 70. Assembled Horizontal Stab assy per print & Vans written instructions. Had to drill out a couple of rivets, but no drama involved. Everything went together nicely. The Tempo rattle can primer I used on the ribs and whatnot isn't very robust, and I scratched it in a few places taking clecos out, so I fogged the inside again before installing the HS603 Aft spar. It's good enough for substructure as long as you're careful, but I'm definitely going to have to find a better solution when it comes to the cockpit.