The Edelbrock Carb is much easier to tune than Holley or Demons ; to make a jet change on them you have to remove the bowls which means spilling gas all over the place. Do that a few times, and youre ready for new Bowl gaskets.
With Edelbrocks carbs , most of the time you only need to change the metering rods (which is literally a 5 minute or less job) ; even if you have to make a jet change, you wont loose any gasoline because the gas is below the gasket. The gasket lasts a super long time as well.
With each Edelbrock carb, you get thier manual with clear charts on what to do to tune the carb to your application. Its easy. You may need additional parts in which case you just buy the Carb Tune Kit with an assortment of jets/rods/springs in it.
Lastly, dont try tuning a carb if youre not in the mood, just had a fight with the g/f, or had a bad day at work. Wait till your calm and optimistic.
Ill buy those carbs from you if you want to get rid of them.