so, correct me if i am wrong, but it seems to me if the car is cold the edelbrocks have a lock out that prevents the secondary's opening up unless the car is warmed up.
My red highlighted hole seems about the same place as yours.
So I went out and drove it. It does seem a bit faster, not as much as I exptected. But ... it is still on the rich side. It leaned out to around 11.5ish. Which makes me want to put a camera over the carb with no filter, and confirm the valve is opening wide open. It's hard for me to believe I'm running rich at WOT with the jets I'm running (.100" primary (75/37 MRs) & 0.083" secondary).
