adjuster cap screw 60 between cylinders 3 and 4 is rotated either clockwise or counter clockwise as required to adjust the intake valve 5 flow rate for cylinder 3 rotating the adjuster cap screw 60 will cause the drive end control shaft segment 34 for cylinder 1 and the unit control shaft segments 35 36 for cylinders 2 and 3 to rotate relative to the unit control shaft segment 37 for cylinder 4 by pushing against the ground side flat 49 at the free end of the cylinder 3 control shaft rocker pivot pin 9 and the resistance presented by the return springs 23 for cylinders 1 2 and 3 when cylinder 3 39 s airflow or f a ratio falls within the desired bandwidth for the target the clamping cap screw 56 and adjuster jam nut 61 are tightened to lock in the cylinder 3 adjustment in a similar fashion the above adjustment procedure is repeated at cylinders 2 and 1 see fig1 c and 14 d respectively in that order by first loosening the appropriate adjuster jam nut 61 and clamping cap screw 56 turning the adjuster cap screw 60 to meet the flow rate bandwidth and then tightening the adjuster jam nut 61 and clamping cap screw 56 the flow adjustment resolution of the system is fine enough to balance the cylinder cylinder airflow at an engine idle condition one revolution of the adjuster cap screw 60 produces approximately a 0 2 mm change in valve lift preferably a total adjustment range of about u00b1 0 3 mm is provided at each joint the beauty of this adjustment scheme.