Finished riveting the center ribs, this took much longer than I anticipated. The wing tip rib at the forward spar was not accessible as I had hoped. I was able to drill #40 and cleco four of six rivets in that location, enough to hold everything in place until I pull the wing off the jig. Those are the only rivets left in the center rib section that can be riveted at this time. There are two ribs that are in support of the false spar that will be riveted when I rivet the false spar in place.
After finishing riveting I cleaned up any small mars in the surface and re-primed the areas where I was working. Rivet access was pretty tight so there were some marks from the rivet gun and the bucking bars. No real scratches, the scotchbright pad cleaned everything up followed by a quick primer coat