Happy Veterans Day. Better pictures below of completion of riveting screw fasterners to the spar flanges. I started using the rivet gun but with poor results; rivets would not come out flush and there was too much bouncing around. I drill out a half dozen and reaccomplished with the trusty hand rivet squeezer (pic 2); it worked fine and gave me a good work out. Both spars completed. The next step is "more" screw fasteners of various types. I probably will not include pics but will note the hours until I get to a "new" step in the process.