I am buying a new paint gun. I have a compressor. I was looking for some type of tutorial on how to paint fairings or anything. What gid sand paper do I use to remove the paint? What grid is used before adding primer? Do I sand the primer? any tips on useing the gun? Etc...etc...? Is there a difference when painting plastic(fairings) or metal (car hood).Help. I have some idea's but I want to know how to do it perfect. Practice makes perfect. Im willing to learn. Thanks guys.!!!