ok, i checked the cap, rotor, and wires for resistance with a multi-meter and everything looked good. i changed the spark plugs (autolite 3924) and sprayed the intake with carb cleaner - no fluctuation in idle. i want to believe this is a carb issue..... just becuz of the differences of the spark plugs between the non spaced edelbrock and the 1" spaced demon...... im sorta scared to jet down the primaries becuz i dont want to lean out #5 adn 6 more than they already are, but on the other hand #1 and 2 are frickin swimming....... john