Did you actually measure fuel pressure with an accurate gauge? At idle and higher RPM? Do you have an in-line fuel filter mounted?
Did you replace the needle and seat? Maybe a bad float? Doubt it on three different carbs, but you never know. You have a HOLLEY laying around to check it's operation?
EDELBROCK has a hotline...maybe a quick call will answer your question.
[ July 22, 2002: Message edited by: KULTULZ ]</p>