FLAT SPOT
What is the cause of a slight flat spot (mid range RPM) only in the primaries? I think the primary float is set ok, PV is fine, fuel @6.5PSI (for street), etc... fuel delivery is Edelbrock high vol. manual, Holley reg w/ bypass, QF 950 DP. What I am I missing?? power hits a flat spot about 4500 in the primaries, seems to go away when hitting the secondaries.