If shots go high, turn towards H (anti clockwise).
If shots are to the right, turn towards R (anti clockwise).
Vertical screw in front of trigger - anti clockwise to increase.
2nd screw behind trigger.
1st screw behind trigger.
You must first remove trigger unit by loosening 2 allen screws in receiver above unit, then pull trigger guard down and forwards. Must be uncocked.
Reverse to reassemble, but with trigger pulled.
Trigger weight adjustment is 2nd screw from the rear. To increase turn clockwise.
Owners manual states not to touch rear screw. This is preset gas adjustment.