After letting the VHB adhesive cure overnight, I started double-flush riveting the trailing edge together using my hand-squeezer and the special flush dies from Cleaveland Tools. Then there were about a dozen blind rivets that needed to be pulled on the two ends before I could officially call the right aileron complete. It's difficult to say precisely how much twist there ended up being. but I'm pretty sure it's less than a degree, which is good.
Resuming work on the left aileron, I started by measuring and cutting a new piece of VA-140 trailing edge extrusion. Then I clecoed it in place and final drilled all of the holes of the trailing edge and the two skins. Finally, I removed the extrusion and then used the counter-sink cage to drill counter-sunk holes into one side of the extrusion.
What's next? Finish counter-sinking the extrusion, and then set the final row of rivets in the nose skin.