Slight confusion and queery

There is an initial pilot screw setting of around 2 1/4 to 3 1/8 turns out depending on the model you have.

Then they run you through the idle drop procedure in order to finally set the pilot screw.

And then they tell you the final pilot screw position should be 3/4 or 1 turn out depending on the model you have.

Why do we not just set the pilot screw to 3/4 or 1 turn out and leave it there if that is where it is going to end up ?

Am I missing something ?

EDIT - yes I am missing something - the ability to read correctly !!!!!!!!!!

Set the idle to 1200rpm

From the initial setting you adjust the pilot screw on No4 carb to achieve the highest tickover possible
Then repeat on the other three carbs.

Reset the idle to 1200rpm

Turn in carb 4 pilot screw till engine drops 50rpm - THEN unscrew by 3/4 turn.
Repeat on the other three carbs.

NOW - which right angle screwdriver can anyone recommend to get at the pilot screw on the 600F carbs ?