Hey there, anyone with knowledge about modifying the Edelbrock / Carter style carbs would be appreciated.

What I have done to my Edelbrock Performer 600 carb (electric choke model):
I basicly spent a several hours with a die grinder to open up the primaries quite a bit and smooth out casting flaws. I did not change the butterfly openings at all but I did knife-edge the butterflies and file down the butterfly shafts. I stopped grinding away material well before the small openings for the idle circuit.

MY problem:
Now the carb flows much more air but in doing so I believe I have redused the venturi booster signal considerably and the carb is not suplying enough fuel for the fire. I have come to this conclusion because the bigger jets I keep putting into the carb the better but it is still all wrong. I went from .092 on the primaries (before the mods) to drilling out a pair of duplicate jets with an 1/8 (.125) drill bit just to get the car down the road and it is still way too lean. I also have an A/F ratio meter installed in the exhaust so I can monitor the mixture.

Anyone with suggestions on how to correct this situation with the venturi booster or has some insight to another possible issue I have created for myself would be greatly appretiated.