I have not adjusted the HS. Technically I shouldn't have to. From factory my notos was shooting the 15.89gr atomics averaging 742fps and it would deviate from 742, to 743, 742,742,742,742 743,741,742, towards the end of air oressure it would jump to like 747 and 748 until it dropped from the reg pressure. It would repeatedly do so shot string across shot string without fail.
When I installed the dream valve I made sure the reg was set to the same speed. My dream valve has the plenum so it should use less regulator pressure to reach the same velocity.
I'll see about adjusting the HST but isn't there barely any hammer to adjust?