so my 2015 Wildcat 317RL claims to have a King Aero bed on the rear sofa... It might be as wide as a king, but it is very short, only kids could lay the short way.
In reality, its a queen bed turned side-ways...queen sheets fit perfect.
Wish I had an answer or a solution for you. Even the queens in the bedrooms are short. No truth in advertising here. At least you have a full queen, though it be sideways!