Idle Transfer Slot on secondaries?

mbaird said
It’s a custom carb so it has aftermarket.
I only pointed this out in case readers know that not all Holley looking carbs follow this procedure.

In most cases the aftermarket transfer slots are too big and need TSR to get them right or as some one I know who knows more about this stuff said he just rips them off and puts the OEM holley base plates back on.