A main reason I got into "Trainz" was to experience the actual (authentic) controls from within old and new locomotives. So far I've been discouraged, after seeing a GP9 with an F7 cab and a DD40X with something other than a DD40 window and hood from within the cab (and possibly other controls). I can do research to see what should be in a cab, but I don't see much in the way of viewing a cab before I download. How best can I determine the authenticity of a Trainz loco's cab BEFORE I buy it? I suppose I can ask. Any other suggestions?