I had an airbrush that was fairly cheap, so when it stopped blowing color (air would still come out), I wasn't terribly surprised or upset. In an effort to try to save a little money, I only bought a new gun - which was quite an upgrade from the one I had. It still wouldn't blow color, only air. So, I changed the hose thinking maybe there was a hole in mine. Still no color. I got a whole new compressor - and I just tried to airbrush - still no color! I'm only getting air. I have a whole brand new airbrush set and still can't get color to come out. What am I doing wrong? I'm not very familiar with all the parts on airbrushes, so I feel like I'm just not screwing the right part or something. Help please!