IIRC a 1mm allenScrew closest to backside of blade In ( CW ) @ 1/10th turn at a time .. test & repeat as needed.If wanting a Longer blade travel 1st to 2nd stage ?, leave front screw alone & back off ( CCW ) the rear most screw in small amounts, test & repeat as needed.
It will be metric.Smaller than 3mm.But..I have the TX200 (probably the same adjustments).I have had it since 2013…60,000 shots.Never touched the trigger adjustments.