1) Buy carbon fiber reed valves (about $60.00 from Provo Scooter). You can feel the difference in mid-range power, believe me.
2) Drill a few small holes in the front of your drive side casing and a few in the back to aid cooling.
3) Throw that black plastic drive side case cover in the trash (all it does is retain heat).
4) DO NOT UNDER ANY CIRCUMSTANCES CUT HOLES OR DRILL HOLES IN YOUR FUCKING STOCK VINO AIRBOX...DO NOT DO IT....DON'T EVEN THINK ABOUT IT. Just remove the air filter and gently wash it with warm water & dish soap, let it competely dry out for a day or two, then get it slighly wet with 2-stroke oil, squeeze out excess oil and re-install. AND ALSO LEAVE THAT SNORKEL-LOOKING DEAL AT THE TOP OF THE AIRBOX ALONE. The stock airbox is designed to cut down on AIR TURBULANCE, as well as keep shit dry.
5) Replace the stock #64 main jet with a Zuma #80 jet and Zuma carb needle (placed on center clip).
6) Buy the white Malossi rear torque spring.
7) Buy a fresh drive belt and keep the old belt under your seat for a spare.
8) Buy the larger Michelin S-1 rear tire.
9) There is no harm in running compressed air through your stock pipe to see if any swarf blows out.
10) Use only 30 weight fully synthetic oil in the rear end.
11) Use only fully synthetic 2-stroke oil.
12) check tire pressure every week and keep them properly filled.
13) Replace spark plug every 1,00 miles (DO NOT TOUCH PLUG UNLESS ENGINE IS ICE COLD OR YOU WILL STRIP THREADS).
9) Get rid of that slushy stock rear shock (try handy bikes usa, or e-bay, rear shocks are hard to find for the Vino).
10) Pretty controversial advice here: Drain your auto lube oil tank, plug-off the carb where the oil line feeds in and go with 3%-4% premix. I have my doubts about the stock auto lube keeping up with a tuned engine and as evidence I would like to submit photos of myself pulled over to the side of the road waiting for my seized Vino to cool down where I can ride it home. A gallon of gas is 3,800 milliliters...3% of that is around 117 mils. So I go 100-120 mils of oil per gallon and have never overheated again.
The only mods I have left to try are a Malossi Vario (as soon as my 5.50 gram weights get here), and a larger Minarelli finned drive pulley.