Is there an alpha-dog on your layout? This is the engine that stomps around the layout and pretty much owns it. When it's on the layout all of the other engines either bow down or work to serve that engine. Challengers occasionally show up that are longer, louder and more expensive but rarely unseat the king. On my layout it's the PS3 Imperial S2 6-8-6 Turbine show below at the station. Was pretty sure a recently acquired PS3 UP FEF 4-8-4 Northern (second photo) would take over but in the end it's still the S2.