Another Jetting Question(Piaggio)

I've been messing around with my zip for a while and I just can't seem to get it right, I've tried from 135-92. 92 the plug goes white(lean) and anything else it just seems to be really oily(The spark plug)


Polini Sport(Exhaust port opened up)
Fully de-restricted TT
Polini Small Air filter.

I know the best thing is to put the air box back on, Mine has a giant crank in and I had this filter from another build.... So does anyone have any Idea ? I'm sorry I know this has probably been answerd a million times. I' using 5 gram rollers and medium clutch springs.

I intend to change the exhaust, And carry on with my porting/ start my flow work ( Got topics on this already). I know Jetting is different every time. But i can't see why it's going straight from lean too to rich and help would be greatful. (It will be taken down to pedparts and setup properly soon but I can't ride 10 miles at 8mph...) Thanks.