Hi, I did say i might be wrong! I was just going by this entry in the 2002 workshop manual:-
Slow Jet And Air Screw
The air screw meters air that is mixed with fuel metered by
the slow jet. .
Turning the air screw clockwise, enriches the mixture:
counterclockwise leans the mixture.
Turn the air screw in until it lightly seats, then back it out to
specified position.
Air screw opening: 1 turn out
I'm Confused!