I've been replacing the cheap air gap vents in the camper with good ones because, well, there's a smell. A smelly smell. Found the source. Both waste valves leak (allows black tank gases to work their lovely way into the grey tank, etc). Unfortunately, the camper has the crappy Lasalle Bristol cable valves, and I need an Army tunnel rat to get to them. Trying to source Bristol seals is an exercise in frustration. Enough of that nonsense. New Valterra cable valves on the way. Sources suggest they are a bolt-in replacement. I doubt I'll be that lucky and I ordered Valterra slip hubs just in case I have to do a complete waste plumbing re-do. Really don't have time for this unexpected development, but such is life. Better to fix it here than trying to source parts in Baja.
Alumn base frame: Slides operate smoothly and camper is now much more rigid than before. It appears the camper will work just fine on its own without the truck underneath it (like a Bigfoot). When on the jacks, sometimes the full room slide would not operate smoothly, and one compartment door would bind a bit, indicating camper flex. Not anymore. Ever notice an empty alumn flatbed trailer (big rig)? They curve upward when empty and are flat when loaded. Tried to recreate that when making the base frame (to a much lesser degree). No fancy math, just eyeballs and a straight edge. When welding alumn with a hot mig, it can pull (distort) if the other side is not secured, tacked, etc. I allowed a slight front to rear arch in the frame build (placing weights as needed to keep things from going off the rails, and flipping it over to weld the other side often as I progressed, so to prevent too much of an arch). Seems it worked well. I'll call that a win for overbuilding. For the first time in my life, I over purchased material for this project. I still have 100' of 1x1.5 T6 alumn rectangular tube. Guess I'll just set that aside in case I ever actually do a ground up camper build someday.