Are there finer scale pressure regulators out there that you can put in line after your other regulator? Like, my regulator can dial up psi from 0-200, but the increments are coarse, by 5 or 10 psi. A/B's are only good at roughly 10-30 psi range. How do you dial in these accurately? I know, double action A/B's can be regulated finely by touch, but that takes practice. I'm new to using my '360 and never had an A/B before. I tend to jump into new stuff with both feet, smart or not. Thanks, SR