Jet size for Gilera Runner VXR 180

[Rio172]

Hi anyone know what jet size I need for a VXR 180 in a walbro carb? I have currently a 34 and 108 with standard airbox and GPR exhaust.
I am getting some bogging after 30mph and not sure if it’s this rubbish fuel ️ or my jets that need changing.
the bike was ok before with the 108 jet so not sure what’s happend.

 

[Elisb]

i have a 200cc 4stroke with a CVK carb and open filter with 45 Slow jet and 140 main jet with a 95 octen and i fill the engine want more fuel