I started out easy this afternoon - riveted nutplates to the cover support ribs and riveted/bolted the large ribs to the fore center bulkhead. The smaller, outer two ribs can't be attached until I have the material to make spacers that go on the back side of the bulkhead. Doing the dance of back ordered parts is going to get tough if it carries on too long.
Moving on to the next bulkhead...hopefully I have most of the material I need! This one is the bulkhead that goes between the seats and the baggage compartment. The plans just say to put a few parts together and drill some holes. What they don't say is that all of the parts have to be made first. It's hard to describe what I did, simply because there are so many pieces in the fuselage that most don't have actual names, unlike being able to describe ribs and spars in the wings. I cut the F-705B center section bar to length, then cut an angle into each end (I think this helps with the wing rear spar clearance). The F-705H spacers were next, cut out of some 1/4" bar stock.
Thankfully Van's pre-bends the F-605C bar doubler, so it just has to be cut to the right dimensions. I trimmed it to length and got the rest of the shape drawn out, but I think I'll wait to actually cut it until I have gotten all of the holes drilled.