Today I fitted the right side F-6101 and the last of the right crossmembers between the firewall and the F-604. I then disasembled, deburred, primed and started riveting things back together. I also bolted the lower longeron in place on both the left and right sides. I started putzing with the longerons, but the plans are very lacking in this area for the 'A' model (read - almost no information), so I didn't get very far. I need to do a bit more research.
I also trimed and did some final fitting on the F-622 and F-624.