I bought a new Holley # 9375 HP that I couldn't jet up fat enough to slow my old pump gas car down until I found that it had came with a .110 needle and seat in the primary fuel bowl and a .120 in the secondary shock rant shruggy
Once I switch the front to the same size .120 needle and seat, changing 2 jet sizes bigger in the primaries slowed it down like it should have up scope

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)