I got the left aileron brackets riveted together. This took a while and had a few tricky rivets. In retrospect I would have used my hand rivet squeezer rather than the pneumatic one because it's much easier to control in awkward positions.
I also spent a lot of time getting the edges on the riveted brackets ground down for final fit on the rear wing spar. I also touched up the primer in the areas I had to shape.
Riveting the outboard bracket together: 
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