Ok. Just let the bypass regulator bleed off any excess pressure that the agitator restricts? When spraying with the ball valve/agitation line partially open, will I have fluid going through the gun, the agitator, as well as the bypass regulator all at once? What about calibration? if I try to close the agitation line ball valve part way when I spray, I will have to get it exact each time in order to maintain calibration. Is this correct?