Put in a good session today, Got the 1010, 1011, and 1012 bulkheads and their associated components riveted up. I then riveted the 1006, 1007, and 1008 frames together. Ran into one snag in that I goofed a rivet on the 1006 and in the process of drilling it out I managed to enlarge the hole beyond the limits of the 4-4 rivet. As a result, I need to buy a #8 AN509 CSK head structural grade screw and a nut to put inplace of the rivet. No big deal, except I don't have that size screw so I have to order it.