Did a few things in the past few days (nothing too spectacular). Used some OSI Quad max sealant to seal the fan

I was trying to make a sort of neat job of it and put masking tape around the fan, 3/16" from the edge of the fan, with the thought of pulling it up leaving a sharp edge. I think it would have worked with Masterseal, but not OSI (first time I've used it). They warn not to try and shape it, but just squeeze it out (3/8" bead recommended). I now know why: It sticks to itself and my fingers better than the surface I want it to seal. Anyway, now I know why others haven't used masking tape that way. And the roof is the place to try it, since at least some of us are just a little too short to see it.
I'm going to use their black sealant for the doors, and I think one lesson is to cut the nozzle narrower to get a smaller bead. I plan to use it under the flange in the cargo doors. Was then going to seal around the edges of the flanges, but I may not, or may use Masterseal, to attempt to make it neater looking. The passenger doors are designed differently--they take screws from the outside to mount. So for those, I plan to use butyl tape and then possibly seal around the doors with OSI or Masterseal.
With what was left in the tube, I first sealed around the cable to the tow vehicle

Incidently, I was able to make the cables a little neater. I tugged from the galley, while Shelly pushed from this front utility compartment, and moved the slack to the back. The wires inside the box still look ugly, so I'll leave the cover on! I also added a few low voltage clips to keep the 22 gauge speaker wire (to the front running lights) out of the way. (The AC outlet is for the air conditioner, when we have shore power.)
When we put the walls on a year and a half ago, the PL Premium pushed them away from the floor a little, and we didn't notice as we put the screws in. The result was about a 1/16" gap between the floor and walls in some places, where the wood was bare (to better adhere to the PL Premium). I tried brushing some epoxy up in there, but wasn't sure I covered everything. So I used most of the rest of the OSI sealant under there

What a job that was! At first I tried applying it with my fingers. After they glued together, I decided our box of latex gloves (coincidentally purchased from Home Depot a week before the you-know-what and associated shortages of anything perceived to be PPE) might be the answer. Took about a dozen gloves, since once the stuff starts to dry, it builds up, and begins to get in places I don't want it. Anyway, done now!
The side cargo doors are deeper than the walls, and so will require some blocking behind the door openings. I made those out of scrap pine this morning, and applied varnish for water proofing

Tom