The progress today was minimal. I dry fit the pieces of plywood floor for the middle section. The street-side piece fit well enough and looks to require no additional work. The curb-side piece almost fits, but it is catching on part of the wheel well. It looks like I'll need to trim a little bit off the plywood to make it fit properly, and will then need to paint the edge. Tomorrow's forecast calls for rain but perhaps there'll be a nice break in the storms or maybe I can do the cutting and painting. We'll see.
I also did a bit of leak detection during this evening's rains. The added sealant along the drip caps above the rear side windows and where gaps were seen seems to have worked. The sealing near the middle street-side window seems to have been less successful, as I saw some damp debris in the floor channel below that window. I'll have to wait until things dry out Tuesday to investigate that problem further.
In addition to getting the middle section of floor ready, tomorrow will probably also involve work on fixing up the belly skin in that area, and cutting insulation to fit.