I've got an older 1/5hp compressor that came in a set with 3 'Master' airbrushes (2gravity feed and 1suction). The gravity feed brushes work fine but the suction feed seems to spray for about 5-6 seconds then drops off off to nothing. I've increased the pressure to maximum but it has no effect. I'm thinking the compressor doesn't give me enough constant output air pressure to maintain a constant flow. I'm a complete newbie in all things airbrush so forgive me if I'm going off on the wrong tangent. If I'm right I'd like suggestions for a competent compressor that won't break the bank. Thanks for all the help.