@T.Albers, Wonderful photos and details, especially the photos of the products used.
Question: How did you eliminate the vestibule doors? I ask because the Traveller's Rest had vestibule doors removed at some point in its operation and I'd like the option of modeling the vestibule-less iteration.
Also, what product did you use to sand the filler material to avoid scratching the aluminum?
Again, thanks for the comprehensive update.