I DID get some work done last night, it was just too late to post when I finished as I had a long day ahead of me today.
I started painting the intake ducts white. I've decided to hand paint them, as they're molded all in one piece, like a "D" if you're looking at them head on, and I didn't think airbrushing would work out so well. Since the nosewheel well, with the keel installed, is pretty constrained, I figure I'd hand paint that too, and while I'm at it I'm painting the area that will be behind the intakes (the opposite 'wall' from the ladder wells). I'm using Tamiya flat white, which brushes on OK and ought to cover in about 4 coats (it dries quick, so 2 last night and 2 tonight). I've heard Vallejo brushes on even better so I may try to get my hands on some of that for the colors I normally find myself brushing (basically white and cockpit colors). I added the exhaust pipes - the external ducting behind the exhaust I painted flat black first, and then painted on steel, hoping to get an exhaust stained look. The steel wound up covering it entirely, but I figure I'll go back at the end and either add Tamiya smoke or black pastel powder to get the look I want. Only a little bit of putty added at the joints there, otherwise a pretty decent fit.
I also cleaned up the seams on the outboard wings and started adding the speed brake hinge fairings out on the tips. Then I mounted the inboard wings. Here I ran into the first real gaps - I'm not TOTALLY prepared to blame the kit, it could always be my parts prep. But fortunately the gaps between the wing roots and fuselage was uniform, so I added some thin Evergreen styrene strip with enough liquid cement to 'melt' it into the gap. That took up most of the open volume, so while I'll still add some putty it won't wind up being too much, and with it being an inside corner it should require a minimum of cleanup.
The first, admittedly fuzzy, iphone picture is the left wing root with the styrene added. The second one is the right wing root before adding the styrene to show the gap I was working with.