[427Aggie]

I was curious about what happened..I would suggest that you take it to a dyno that can run your A/F for you...it may suprise you....I thought I was running way rich and it turned out it actually was lean...but I still got black smoke which is a sign of richness.

I am curious what you are running on your bypass valve? If that was a 0 then yes taking the idle holders down should make that kind of difference...Also are you running any filters on the carbs? This could also be a reason for the richness......I agree that Mike and the others are a wealth of knowledge and are great guys to speak with.

Matt