Dave,
Any chance you can get the customer to send you a door? I was surprised to see on alot of new RVs that the doors are vinyl covered in such a way that at a quick glance appear to be solid wood, but it is an overlay, even on the raised panel doors. I'm not sure if it is thermo-foil, but in my opinion it is alot of work to make wood look like wood. I'm sure it makes sense somewhere.