need some carter avs questons answerd

so i got my carb back from rebuild finally got to fire car quick trip around block was adjusting the idel speed and when i finally got it where i like it normal idel not low loppy just a safe 700 800 ideal i noticed that bowl vent was open.
is this normal because at this point the car was off and i messed with it a few more turns or 1/4 turns and the vent closed witch way should this be when the car is running and at a idel