Lots of work accomplished today! I had planned to install the "Almost a 14" mod during assembly, but the challenge I have is that on a slider it attaches through bolt holes that hold the canopy blocks. Since those don't get located until much later, There isn't any way to attach the Anti-splat crossbar at this time. My options were to leave the factory crossbar clecoed in and work around it, or fall back to plan B. When I look at how this all fits together, it's evident that the big F-757-S gussets that cap each end of the crossbar and tie it into the longerons create a ton of torsional stiffness. Looking at the Antisplat installation, it moved the crossbar aft about 3 inches and all those stresses are cantilevered on one end of the bar, instead of being spread out. I'm not sure how I feel about this... Long story short, I ended up just riveting in the factory crossbar and associated other stuff per print. I'm going to fly it this way for a while and if I decide that I absolutely must have the mod, the hardware is on the shelf. Regarding the F-757-S plate, I'm building a slider, so the front end gets a big 2" radius carved out of it. I thought about trying to lay this out with a compass or something, but after looking around the shop for a few minutes, I found a roll of tape that was the correct radius and just traced it out. Rough cut on my band saw and then finished them off with a 1/2 round vixen file. Also did a lot of riveting today. The plans get pretty spotty here about what order makes sense, but thinking through it, I ended up counting rivet holes on the upper skins to see where they stop overlapping the F-770 skins front and back. Once I had that clear, I riveted the F-770 to the longeron in the cockpit area. There are going to be a couple of rivets just fwd of the F-704 bulkhead that are going to be a bear to buck once the canopy decks are permanently installed, but I don't see any other way to maki it happen. They pretty much have to be done in that order. I also match drilled The F-721A to the longerons, deburred and primed.