I've only asked a few questions on here because searching FAQs, magazines, and google gets us a lot of info and I'm using some old car modeling stuff to get me past some hurdles. It's our first layout (my son is 7 and is the driving force here). We are doing some weathering of a couple locos and cars just to get our feet wet and do some minor work to increase realism for him. I'm to the point of needing to shoot dulcoat on a loco. I have an airbrush. I want to get an even finsih without washing out my details too much, but they really need to be protected as we're already wiping some of the stains off the roof when we pick the thing up. I'd rather touch that part up than the fades on the lower body. I want to thin the dulcoat out properly so it will coat evenly and not glob in places. If I need to do a couple coats of fine mist, that's fine, but I do NOT want to experiment. We have a limited budget and my son runs the trains as often as he can and he'd be quite upset if we flubbed up one of his locos and had to do a repaint. that would not be a good day. So, to summarize: what ratio should I use of thinner and dulcoat to get a fine coat and full coverage in 1-2 coats....? Down the road we will probably be wanting to weather them a bit more when we get some experience and the layout evolves. thanks.