If its carbed, try the idle adjustment screw after you have it warmed up. I would'nt mess with the air fuel screws. Do you have a manual? You can download from Pro Itialia's website.
www.proitialia.com
Can I ask how much was the cost of the Dyno-Tune? and where are you located. I'm in the City of Chicago,IL. USA. and for some Ducati eye candy I present... the Ducati Hottie