Hi Marten,Hi Rick,
Be aware that the door you are using above is not the door to be used here.
The door you show is the door for the two outside staircases to the lower deck.
If you are using that for the inner cabin you have one short for the outside.
You are right the cabin doors supplied are the wrong size, I have made all these inner doors myself.
I understand what you mean but that isn't the doors you speak of. I cut out the square section of the door that was supposed to go there from the kit manufacturer and inserted into the scratch built door ( See pic in brochure). Since there's no drawings of the Day Cabins Interior, I decided to improvise and add the section to the door to dress up the door for visual effects only. Here's a few pics for clarification.........