Well, after way too long, I made a log entry today. I've been separated from the project for 5 months, to tackle a multitude of other projects, at home, and at work.
Today I was finally able to get something done. I started riveting the rear spar carry-through, and notched one of the two 414's where the man spar splice plate needs to pass through. Tomorrow, I should have time to do the other side, and permanently riveting together the 414's,415's and the 405/406 pieces.