adjusting carter avs 4426

adjust the small screws like you would a regular screw. but if it has to be 2 or more turn out you have the well known, lean idle jets. that are in the primary clusters. its the small brass tube. you will need the small drill bit set. the tube is necked down at the bottom the jet is small dia. on a pin vice. by hand. only drill it by .001' - ,002" hold it with the tube pointing down so the burrs dont go into the tube.