I mixed up a small batch of primer and primed the right skin and the remaining 2 ribs I did not get to during the last priming session.
I started the riveting per the directions with the rear spar. I riveted on the reinforcing bars, which went well, I used the pneumatic squeezer which makes life easy. I do find that my elbow hurts much like tennis elbow after riveting a lot with the squeezer. If is fairly heavy.