Pilot jet/air screw controls 0- 1/8 throttle opening. But it will still affect when eithr rolling the throttle on or stabbing it quickly. How many turns on the screw are you? Lightly turn it clockwise, counting # of turns, until it just barely bottoms out. Turn it CCW back to where you were. Now you are going to "tune" it. Going no more than 1/8 turn at a time, allowing 10-20 seconds for the engine to "adjust" to the new setting (I like to also blip throttle) you are trying to get the highest idle speed possible. I sometimes "tweek it" a little during test drive. Both slow roll and stabing throttle. The closer you get to optimum, the less you turn it to see reaction of how engine likes it.
Also, if you have carb apart again, make sure air will blow through pilot jet into carb bore (checking for plugged passage).