172 help.....

hi iv got 172 tyhpoon with a 25mm carb a polini vero polini belt polini clutch pmtunig clutch bell and pmtuning secondry gearing polini reedbloock pmtuning intake and a scorpion exhaust..wots the best rollers size and jet size as im useing standerd tyhpoon rollers and a 102 jet...............

 

i've got 12.5 in my sr 172 with similar set up to you and they work ok for me

 

but do you have the polini clutch if so wot spring have you got in blue or green mate........