One of the back-ordered things that I received last week was a bag containing the aileron bellcrank brackets, so I started by deburring them, scuffing, and then priming them. These were then bolted onto the main spar using the existing bolts that secure the tiedown mount.
I then started clecoing the freshly primed rear spar and its multiple doublers. The instructions suggest riveting the doublers before clecoing it to the rest of the wing, but you have to be careful not to put rivets into the rib holes when doing that. I opted just to cleco it directly to the rest of the wing and rivet the doublers while it was in place and easy to see where the doublers were located. Skipping over the rib rivets would make it easier to remove the rear spar in case you had to drill out any bad rivets. Fortunately, all of the rivets that I installed with the hand squeezer seemed to go in without any problems.
What's next? Time to actually rivet these ribs to the rear spar, making this even more of a more permanent assembly. Then start working on the top skins for this wing.