Most adjustable pressure regulators increase the pressure when you turn the adjusting screw CW and decrease when turned CCW. If you cannot find an adjustment I would decrease the air flow by clamping the supply line until the slide moves slower.
This post is my opinion (free advice). It is not intended to influence anyone's judgment nor do I advocate anyone do what I propose.
Sold 04 Dynasty to our son after 14 great years.
Upgraded with a 08 HR Navigator 45โ...