A new scenario has just been uploaded: a GN freight run on the MCSA route.
You can also download it on my website: http://golden-age-rails.com/scenario.html
Your task, should you accept it, is to assemble a train of empties and pulpwood flats at Moscow and deliver it to Camden, where you must break it up and move some of the newly arrived cars to their designated sidings. Which is easier said than done as the Camden Yard is on a 0.6% grade and you have only one engine (an RS3). This post will self-destruct in 30 seconds.

Cheers!
Michael