Edelbrock IMS (idle mixture screws) are adjusted with a flathead screwdriver. Setting an Edelbrock carburetor to run efficiently is not a difficult thing to do. Learning how to set air mixture screws on Edelbrock carbs will give you the ability to adjust them like a pro. "Performer Series" ...
nor should it have a gap wider than the diameter of the drill bit. To adjust the float height, use needle-nose pliers to bend the small tang arm that attaches to the float and the pivot assembly. Bend the tang