Thanks in advance.
They are distributing the Troop Sleepers and should be able to get what you are
I believe tha CCS is no longer in business. I tried getting parts from them
(through Walthers) several years ago and they were not available even then.
Westerfield used to sell Youngstown doors separately but no parts by them are
listed in the current Walthers. At one point I went to cutting up/modifying
packages of Athearn Youngstown doors to get what I wanted. Results were nice
but a bit of work.