Transfer adjustment screw

Anyhow you asking this question tells me you haven’t held a carburetor in recent history. If you’re really this curious you could get a car and start learning for real.
It's been a while since I've had a carburetor. When I did I didn't know anything about transfer slot, all I was exposed to was idle, a/f ratio and float bowl adjustment. The so called car guys that I knew back then never mentioned it either. This and other things is probably why a guy in high school had a mean running 350 Pontiac. I understand what you're saying about the car issue as well. I'm just trying to learn didn't mean to upset anyone