@peter allen 072518 - Did you notice that the passenger cars have no extra weight...like many of the older Madison coaches are weighted and not by any small amount? I did feel like the Madison passenger cars also had more refined detail than these particular B&O passengers...with the only outsanding detail was the window shades and doors open (albeit they tend not to mate well with shell). I also believe there is some missing steps but I haven't confirmed that as of yet.
Anthony