[Morris]

Clois

Check the Idle circuit out......

You can lean it out by restricting the fuel coming to the Idle circuit.

Not a good idea to drill the Air Bleeds..... unless you're ready to drill and tap so you can us jets to control the air bleed....

measure the air bleed (ID) before you do anything.

BTW how do you like the Aerometer fuel pumps and regulator.... ?