My disease seems to have abated somewhat, so I spent some time downstairs and riveted the trim tab hinge to both the tab itself and the left elevator. The pneumatic squeezer is the weapon of choice for setting these rivets, but I had some problems getting the flush set to fit between the spar web and some of the hinge eyes. If the flush set is too far forward it can push on and bend hinge eyes, not a good thing. And surfing through the Van’s Air Force forum, I found others had the same problem. My solution was to take a spare flush set and grind it down a bit to reduce its radius. Worked great!
Here’s the trim tab, essentially complete.
The riblets came out fine, I think.