After coming back from a long Memorial Day Weekend trip to Sedona, AZ, I finished riveting the skins on this weekend. About 500 rivets in total.
The trickiest part was (again) getting the holes in the skin lined up just right with the holes in the ribs and channels underneath; several adjustments of the clecos were required, and even then there were still some holes that I needed to ream a bit for better fit.
35 hrs total to build the HS, including all the rework I had to do with the primer (I expect that to go much more smoothly next time!)
With this part done now, I’ll be starting the elevator next.