That's really looking nice! If you want to have some fun, take the tracks off and run a pencil around the inner rims of the bogie wheels (where the steel shoulder by the tires meet the center guides). You can also do this on the idler and where the sprocket contacts the tracks. Gives it all a nice worn metallic look and it's EASY to do. I can't remember if the smaller support rollers are also steel or rubber tired... maybe somebody else knows. Those look good with graphite on them too, if they're steel. Cheeers! Ron