Couldn't help but remembering an A/S I saw at the A/S factory last July..The family came in from FL. with a new(to them) unit to have the stove, A/C, and, black water tank replaced. Ended up having the 'A' frame repaired as well. I happened to walk by just after the Tech pulled the skin back off of the 'A' frame. It was almost completely eaten thru with rust`on that one side. The fix was to weld a new angle iron section to the old frame. Made me stop and, think abt what you don't see, can ruin your day~even worse, hurt you~(this unit, supposedly spend it's entire time in FL)
For what it's worth, I'd go looking back further then just that one section..
Last Spring, I completely sandblasted the entire front of my 'A' frame and, painted it. Last I checked..it still looks great~
I did mine with a bit of overkill but, I wanted it completely redone and, to last till I become a "PO".
I recommand the POR 15 route as well..Take a look at their website. Some very helpful hints and, excellent products~!!
WBCCI 5292 AIR 807
New England Unit