Ok I am planning on buying an unpainted RS3 tomorrow and painting it up with the L&N mid 50s black or dark blue and buff pattern. For the time being I plan on using hobby spray paint until I get the airbrush set up when I get back from Iraq. My questions are about the prep work. Do I need to primer the parts? And once I've applied the decals what do I need to finish it with. Any pointers on the process will be appreciated. This will be my first foray into train painting.