It's just unbelievable! I just discovered that the type of an auxiliary locomotive hauling a freight train on the Sand Patch Grade has not been carefully selected by the DTG developers, based on train weight and locomotive power, but ... is chosen completely randomly by an in-game algorithm every time you start a scheduled run! So, instead of a second AC4400CW locomotive with 4,000 horsepower, you can get a random GP38-2 providing just half that power! No wonder that train is then unable to overcome the steep gradient and stalls in front of the Sand Patch Tunnel! What kind of realism is that? I thought that only the colors of auxiliary locomotives were drawn, not their type! 2,000 horsepower is a big difference in tractive power! So, not only are some trains lacking the necessary pushing locomotives, but the only auxiliary locomotive that has been provided can be half the power! I have no words.