I've got Koni Classics on my Spider 1750 1970. I was not aware that they are adjustable.
I checked Koni.com, it seemes that only the rear ones are adjustable.
Koni: KONl Finder
Otherwise Msiert is right both in teory and other Alfisti Classici opinions. 105 series Alfas naturly overstears in power-on bends.
Erik