Thanks SW! That confirms what I already thought. I appreciate your hunting that down. Looks like I oughtta do my best to fit that mattress inside within 75-76". It'll take a LOT of gigs away from Barney
Now for some pitchers
Picking the trailer up off'n the other trailer:

Gonna work on it outside. Inside looks like the jolly green giant picked up the barn and shook it

I need to stop and do some organizin'

It gets shady after about 3 pm on that end of the barn. Very pleasant with a little breeze, I almost prefer it to being inside with a fan.
Pulled off the flat and broke it down, found a bunch of junk where the bead's supposed to seat. I don't blame it for leaking, I'd leak if I tried to be seated on that too!

Brushed it off with wire brush and painted it with Ospho and a cheap HF bristle brush.

Since I had a can full of stuff and a wet brush, I brushed on a few spots I'd missed or that got rained off of the frame. Got most of it except for a few places where I was stretching from trying to stay upwind of the drift. I'll leave it until tomorrow and get some paint on it.

The black is where rust was, the white is excess Ospho that didn't have any rust to react with to turn black.

That right tire is all weather cracked and buttugly, but for time being I'm gonna leave it alone. It's holding air and if it ain't broke I'm not gonna fix it

...it'll do for moving it around to work on it, and I still haven't decided if I'm gonna keep those 4x4 wheels and hubs or find some 5x4.5's. I do not have a spare 4x4 wheel, is probably what will be the deciding factor, and I do have the previously-mentioned metric buttload of 5x4.5's.
Slowly accumulating other stuff I'm gonna need for this build. Picked up a couple packages of canvas drop cloths from HF, and since they were on sale, I got a box of 36 2" cheapo paintbrushes for like twelve bucks. (One of them got used on the Ospho-ing today

) Already have a gallon of TB2, well, a partial gallon. I use that on my furniture building. Also have roof pooky. Might even have enough. Got a pantload of oops paint in all sorts of wild-ass colors. Hmmm

....taking that literally, I wonder if I could get the wife to paint a mandrill on the side of it.

On second thought, I'll probably just mix all of 'em together and use 'em for the first few coats.
Oh, I also went to the nasty filthy slobby big orange store which is the only place within 100 miles that carries Foamular 150. They do indeed have it, and even some unbroken pieces of it! What a concept! I cannot imagine how they compete with the neat, clean, well-swept and adequately-air-conditioned big blue store. Kinda like comparing a K and a Wal. I picked up a 2x2 piece of the 1" just to mess around with it and try gluing, etc. Haven't decided what I'm gonna try to make, but I'll post some of it when I do!
Ya know, it's almost as much fun to conjecture and plan as it is to actually do the build!