Pretty short and simple day today beginning to rivet fuselage components together finally. The firewall gussets, support angle and center floor stiffeners were installed. Notice in the picture that the last rivet in the center floor stiffener is a pulled LP 4. I tried and tried but could not get a way to buck or squeeze this rivet. I was going to try but I decided if I screw it up which was about 90% that drilled it out would be a nightmare. So I decided to go with one pulled rivet which I'm certain won't compromise anything. Heck, lots of people attached there wing ribs to the spar with nothing but these LP's and they haven't fallen out of the sky yet. Oh and I had to put the steps in just to check it out. The tubes will have to be ground down about a 1/4” to fit snug. Something I'm not familiar with….. a long tube problem ;)