Easy is not necessarily the best way to do things.
I do not use metering blocks with 3 holes/4 holes 5 holes (even though I do have several sets of metering blocks Holley did for Keith Dorton for the 350 cfm 2-BBL circle track carbs many years ago). Here is a link to the metering block info:
https://www.hotrod.com/articles/ctrp...etering-block/
After Dorton/Holley came out with the first Tuneable Metering Blocks, everyone jumped on the band wagon.
You do what you want, Formulajones, It is your carbs.
So how big are these "IFR's are too big)?
Typical 850 cfm carbs have plenty of idle fuel without large IFRs with 4 corner idle systems (in the lower position). We even move the IFRs down on Dominator Carbs.
You might want to read this whole thread:
http://www.motorsportsvillage.com/fo...php?f=6&t=9717
I have posted info in that thread years ago and Tuner and others specifically talk about 2 hole Emulsion Metering Blocks and the PROPER LOCATION (lower position) for the IFRs. Or you can just do what you have been doing in the past.
Tom V.