Pinasco Longstroke set-up

Hello
Can someone please explain the proceedure for setting idle and mixture screws properly?

Set-up is 2004 PX200 with:

Pinasco 215 with 1.5mm base gasket
Mazz fine balanced longstroke crank
Autolube SI24 carb (with hex-type mixture screw)
135 main, 190 air, BE4, and 20’ timing
NGK 9 plug (it’s ~30 degees C here at the moment)

Currently idle is very rough and stalls when cold…
Prior to changing settings, idle was good but acceleration very boggy down low…

Top end is fine with a darkish chocolate plug
Thanks
Andrewavich
[:D] [:D] [:D]

okay, so 2.5 mixture screw seems ok
[:D]