Tonight was a short session that was primarily consumed by getting some familiarity with the pneumatic rivet gun and the offset rivet set. By using them together I was able to get the rivets in the remaining rib of the right flap. I also took the time to drill out the one rivet in the rib of the hinge bracket from last night that I had to install reverse due to clearance issues with the hand squeezer (I actually ended up removing all 3 of the rivets in that rib and setting them all using the rivet gun). What's next? I think I'll need to get some more practice with the rivet gun before I feel comfortable using it on the skins. I also need to scuff and prime the inside of the skins before I start attaching them for riveting.