My 950 Holley runs too rich at light/cruise throttle.
Idle is 13.5 AFR
Light throttle 1,300---2,500 AFR is 10.9--11.5
Max throttle 12.5

I can get it lean at cruise 14.5 AFR by leaning out the idle and transfer feed passage,but then it won`t idle at 16.7 AFR.
Whatever I loose/gain at cruise takes idle with it.

IFR`s .040
AFR`s .070
Idle vacuum 7/8in.s
Light cruise 12/14in.s
Whats the trick to stop the idle/transfer circuit from keeping up with more vacuum?

70` Cuda`,440 6BBL Jerico,Dana 4.56 Still on 93 Pump Gas
9.87 @ 136/1.31-60ft.`09 Mopar Nationals PASSON PERFORMANCE "Stick-Shift" Champ!
2013 StickShift Challenge Winner@ Mopar Nationals!