Sorry, being lazy I used the same set of road names as for the Mikado and Pacifics. The N&W is not included. I will see if I can get a set specifically for the mallet This evening's project!!!!!
You could make up your own set with the texture files I have included.
I am afraid it take some persistance. Once the loco is in the sim you have to click on it. Try different positions until the flyout appears on the right. It is probably easy when you know how, but I haven't got the technique yet. Just keep clicking and eventually it should appear.