Hey, that fine looking loco looks familiar. I find using a form of dithering makes the textures 'sharper' and less inclined to result in a layered effect, which can be a problem in MSTS and spoil the look of nice textures. Also, you can tweak the model shape file data internally.
My pic shows the model without lighting effects added.
Despite many initial problems understanding the physics data in the ENG(ineering) file, it is now possible to tune a steam locomotive reasonably close to prototypical performance. However, a major problem remains - getting good water usage results. Apart from that, you have to drive it hard and concentrate, otherwise you run outa steam if you don't manage the works.
Cheers, Bazza