I have a 3778 Mountain Aire similar to the one you are looking at. I have weighed all 4 wheels and I am no place close to the 22000# limit. I Can carry a lot more and still not even be close to 22K. If I would always travel with fresh water tanks full and also the holding tanks full I may go a lot heavier but that would not be practical. You need the holding tanks empty f you plan on using any water. The brake recall was caused by a phenolic piston in the brake caliper swelling from water in the brake fluid and not allowing it to retract. The Workhorse website is active and with the VIN you can check if the recall was done. The number on the new calipers is the same as the old as far as I know. I had the recall done asap when I had brake problems an it has been great since then. The W24 chassis didn't come out until a few years later so don't waste time looking for that unless you want a newer one. I cruise at 2100 RPM with my toad @ 62mph and get 8-8.5 mpg.