Had to make a revision to my pattern for the F3 and F5 bulkheads, based on a file in the advisories section of the online forum. These are not really bulkheads, they are really more like ribs. they connect to the center section at the bottom, and they line up with F2 and F4 at the top. I have a feeling that fitting them may be a challenge, and I may end up coming back to forming these again. With this, I have all the fuselage bulkheads at least preliminarily done. The firewall still needs its flanges bent, and the bulkheads in way of the tailwheel need some more reinforcing parts added, but it is very nearly time to pull the wings off and start fuselage assembly in earnest.