Old shape piaggio typhoon 50 dellorto 12mm phva

Hi guys ive looked everywhere even
HayNes manuel does any know the setting for the 12mm dellorto carb pilot airscrew setting all other carbs are there in haynes just not these for some strange reason any help
Would be appreciated thanks.

 

start at 1 1/2 turns out, it's about the norm......

 

Is that with just about every carb mate what controls quarter throttle and midrange??

 

And thanks steve when me mate got the 50 it was on 1 full turn out but after a ride it kept cutting out during the journey and only started back up when cooled