Dutchmen has played fast and loose with the motorhomes over the last several years. Good news is there isn't much that is proprietary, most of the various components and appliances are pretty much industry standard and relatively easy to source replacement parts for.
I currently own a Coachmen Concord (Forest River product
) but there isn't a whole lot of difference between the various brands.
Your floor plan looks similar to mine, just a bit shorter.
Are you on the Ford or Chevy Chassis?