It's available on Amazon https://www.amazon.com/Suburban-Manufacturing-5239A-Water-Heater/dp/B01MY7FHKM/ref=sr_1_1?dchild=1&keywords=suburban+sw6de&qid=1588722345&sr=8-1

They ship to/from Canada if I'm not mistaken.

One other question and I've had 5 years of trouble with this.  Has anyone had any problems with their garage door and the seal?  I cannot and have not been able to get the seal to cure to the door side and there is a lot of water damage in the back.  The dealers cannot find a fix and say it's a manufacturers defect but no one will help with all of the water damage.  There is mold constantly in the back portion and now we're trying to deal with it through various other groups.

Anyone else have a seal problem in the garage door?

Sorry about your water heater. 

I would just get a direct replacement Suburban one. Its not that expensive so not worth the trouble to try to fit something different. The model is Suburban SW6DE. The E stands for electric. If you never use electric (I don't) then the SW6D is around 70-80 USD cheaper. RV Parts Country has the SW6D for only 280 USD.  Not bad. Just be sure to pull the anode and fully drain it for winterization and you shouldn't have any problems in future. 

Yes, I think you will need to remove the floor in the areas you are describing that are soft. Replace the plywood and if damaged or broken up, the underlying foam, and either replace all the  existing finished flooring, or if you want, cut the finished flooring cleanly straight across and install other flooring of your choice up to that line and cover the gap with a floor transition strip. it depends on how you feel about the aesthetics of that. For me, I'm a firm believer in if it ain't broke don't fix it, so I think I'd try to save as much as possible. Good luck!

The new F-150 sure looks pretty in my driveway, though.  

I went back to Las Vegas and retrieved the Dakota, filled it with a big slug of K-Seal and drove it home.  Ran fine and I may have even sealed the leak.  I slapped a for sale sign on it and parked in front of my house.  A neighbor who has a used car lot payed me the price I had been asking and put it on his lot.  A few weeks later it was gone to who knows where.

We wanted a truck that we could count on not to break down as we had lots of trips planned for this summer, but, alas, Mr. SARS-CoV-2 came along and put the kabash on that idea.  Now, I'm stuck at home whining about not being able to go camping and the spring here is screaming to get on the road.  Who said life was fair?

Best of luck selling your unobtanium to Kim and the gang.  I see he's back in the public eye.... at least they say so.

Landyacht, welcome to the forum.  As another ex-sailor, I can say tinkering on your Pod will very satisfying.  As for your soft floor, do check for moisture, but also keep in mind that the floor is comprised of a sandwich of thin plywood and foam, the latter of which can get squishy from too much weight applied repeatedly as the plywood flexes over the foam.

As former sailors I'm sure you're familiar with the causes and insidious nature of wood rot so will sort out that potential issue before laying a new floor on top of the soft one. Good luck!

Accept no substitutes, only superconductors will work properly for that kind of gear. If you don't have a cryogenic system on hand I can hook you up with some unobtainium that's superconducting at room temperature. Its left over from a cancelled contract with CERN after they decided to go old school with liquid helium. CERN ended up cooking off a couple of their big dipoles after they had a helium leak. 

CERN's loss is your gain. This Pandoran unobtainium is fully refined and ready for final fabrication, at the bargain basement price of $40 mil per kilo. As the unobtainium is currently in the possession of a Nigerian customs official only a modest advance fee will be required to expedite its export from that country to the US. When you are ready I can send you the banking information for his account on the Isle of Man. 

I'm betting that NASA would be very interested in one (or more) of those. 

I wish certain other things around here had an anti-gravity guarantee!

Otherwise known in the plumbing trade as a "grinder pump".