360 Plug help

Carb is going back together today.
The air bleeds are not threaded and yes the quality control is terrible.
found metal chips and burrs hang all over inside along with the easy idle not even drilled out.
Not sure on the history of the carb since I just got the car and am going over it now.
Yeah, those are pressed in bleeds. They CAN be changed, but it's pretty labor intensive. They have to be pulled, then the holes tapped for screw in bleeds. If you really want that adjustability, I'd just get a Quick Fuel carburetor and be done with it.