Is that back wall of the DTD kit already glued to the other walls? If not, I would contact Randy at DTD and see if he has any back wall castings lying around.
If its already glued in place, I think ur best option is to hide everything on that wall with a big billboard sign. Or, just back that wall up to where it can't be seen
Did u prime the casting first? The Dtd castings really need to be primed first with a light coat of spray or even a light dyed alcohol wash of a light color. Easiest is to use white flat primer.
Randy has good directions for building his kits on his website. They are updated. The directions that came with that bus terminal are probably a bit dated
