This is a continuation of the "airbrushing problems" topic. I now have my Power Jet Pro coupled with my Iwata HP-CH with the MAC valve.

I have gotten it down to 20psi pressure but when I adjust the MAC valve, it seems that it could be much greater or less than 20psi. With it all the way open it seems like a lot more than 20psi.

I haven't put paint in it yet as I got started a bit too late and just had time to play with it a bit.

Help