8 is the new 10

Im determined to keep this scoot (150 super) on 8 inch wheels..so dont suggest going 10 inch

It has a polini 177....24 24 dellorto carb..and a sito plus ..and about 11mm cut off the crank with a hack saw in my shed]

I am after advice on changing the number of teeth on clutch cogs or individual gears(1 to 4) to get more top end

Third gear is particularly use less..if i drop into third all I get is high revs and no extra power