So SOS (tsw4) locos on auto fireman are insanely OP thus insanely boring, on manual route is broken, every single connection is failure. Instead I can take nice photo... Thats all. Curtain down...
Make sure to open the firebox door as this makes the fireman shovel coal. Otherwise, your fire will go out without warning and you get a service failure. Also, look here if want a more realistic experience on SoS: https://forums.dovetailgames.com/threads/spirit-of-steam-a-realistic-challenge.72641/
I would also say to go and look at that thread. I have enjoyed the kettles much more since I started following that thread.