383 Wont Idle with new to me 800cfm DP. Idles and runs ok with Edelbrock/AFB

Maybe. But you didn't need a WBO2 to tell you that the float was shot, did ya. :poke:
Please don't tell me you did!
:p
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The one barrel was a customer's today, the O2 sensors to help me fiddle with my dual quads- Edelbrock's if you will...