Hi,

I'm a newbie at body work and have a question about spraying. I have a DeVilbiss Finish line gun using 1.5 tip, 3/8 air hose, 120 gallon 2 stage compressor. Regulator at tank and on gun. I'm shooting PPG DP50LF. I'm not getting consistent output from the gun, it surges. Any ideas on what's happening?

Thanks