I have blocked a lot of my Outfitter experience from my memory , and oh how times have changed , used to be if you besmirched Outfitter you would get blasted by hords of faithfull and start a family "cousins" brand war .
As I seem to remember though Outfitter used luon behind the filon until about 06
Here`s a pic of when I had to take out the water heater in my brand new camper "04" because it leaked when it rained or when you washed it.
The perforations on the Attwood water heater need to be sealed on the back side where the flange is folded over, wasent done , and the silicon caulk job they did on it was left to dry before the WH was set into it


here you can see the luon behind the filon and also see that the luon is not adhered to the aluminum frame

Since I payed for the right to express my opinion I`d say Outfitter is evolving trying to move past their problems , good thing , the bad is they have never taken full responsibility for the issues they have produced in past units, they don't replace bad units that they cant fix , they send you a tube of gorilla glue , smile and say nice things and hide behind their "great " reputation
To bad ,they have many happy owners , but too many left hanging miles away