ORIGINAL: Dr1Driver
IMO, the hole should be drilled out to the next larger drill size to allow sufficient air for proper leaning of the low end.
Dr.1
If you want to know how I feel about this, get a carb with a low speed needle instead of the air bleed. I've had exactly one FP engine with an air bleed low end. It took 2 months worth of tinkering to finally get my low end correct. I'll never have another one, that's for sure.
Ken