Hi Bruce,
A little late to the conversation, but yes, it makes me crazy! Whoever designed it was totally confused. Don't know how they got it right on the RDC-4. When closed, the curved handrail would be on the underside of the floor section which folded down above the steps! When open, it would be against inner the vestibule wall (abutting the passenger section). I'm sure yours looks much better with plain doors. -- This is one of the reasons that my chosen tinplate RDCs are the old AMT/KMT models from the 50s. I also model the B&M, so the plain ends (versus the MTH fluted ends) are right. And the AMT/KMTs have correct looking trucks and proper plain doors. The downside, of course, is that you have a hard time finding them, but so far I've got two powered ones, acquired on eBay (one even runs! although it clearly needs cleaning and lubrication) and two spare shells. Unfortunately they only came as an RDC-1, while the B&M had 1's, 2's, and 3's. So my long-term goal (IF I ever manage to retire) is to kitbash a 2 and a 3, add some handrails and things, and letter them for the B&M. (May have to go wild and get custom decals for the old Minuteman heralds...) I know the kitbash is possible, because I once saw the beast below on eBay -- some inspired lunatic not only made an RDC-3, but he spliced two cars together to make it full length! With O-36 curves, I'm not going there, but it is good to see someone has already done what I want to, in adding the baggage and RPO compartments. -- If you see this, would love to see pics of your remodeled Lionel.