2014 Forest river sabre 36qbok outside kitchen door

[spd633]

I have a 2014 sabre 36qbok it has been in the shop since July of 2018 the outside kitchen door has rotted and needs to be replaced by local dealer / repair shop has contacted forest river and they have sent 4 or 5 doors and they have all been the wrong size. We have been told that this was the only door on the camper that they built in house. Now forest river says they can't make the door and don't have one and they have no idea what to tell us to do.. I need help from somebody on what to do please help thanks.