edelbrock 1406, running way rich, how do i tune them?

try a fatter rod. that leans it. the idle screws should be baselined at 1.5 out then set idle. Warm motor: turn one side to get max rpm, then reset idle speed then adjust the other for max rpm, then reset idle again. then trim both in until you get just a hint of a drop in RPM, there you go. Now try fatter rods. The rods do not effect idle. Also make sure your rods are fully sunk at idle. You can turn out rod covers so you can see the rod carriers in their bores. At idle they should be down, and not bouncing. If they are up or you can push them down more manually then your rod springs are too heavy, lighten up with different springs. Its nice to have a good tach and vacuum gauge for this. [ame]http://www.edelbrock.com/automotive_new/mc/carbs_acc/pdf/carb_owners_manual.pdf[/ame]