[Gaz64]

I'm not a member on the racingfuelsystems website, but I have read your thread on there.

I fail to see how tuners recommendation of reducing the high speed air bleed will lean your transition circuit.

You could take out the main jet, and the high speed speed altogether or block them off, and as long as airflow doesn't start the main circuit, no amount of change to the main circuit will change the idle/transition circuit metering.

If the current IFRs have no number, get hold of a pin gauge set to measure them.

Don't muck around with bits of wire.

If they are smaller than your new HSABs of 31, then they are probably 28s or 29s.

Your mixture screws at 3/4 turn, and rich above idle says the idle circuit is still too rich.

A larger idle air bleed in the early 70s may cure all of this off idle richness.

So to me, you need slightly larger IABs, and slightly smaller HSABs for the top end.

Gary