I have a 2003 g35 coupe that has some sections that I want to touch up the paint. I have a model grade air brushing kit with a compressor attachment. My question is if I use a touch up bottle kit from Nissan with the proper paint code do I need to use a reducer to have it properly run through the airbrush? Also if anyone knows any good sites that explain how to use an airbrush to touch up automotive paint that would be great.