center of gravity

If you want to drop the center of gravity and the handling of a scooter.. what different methods can you go about doing so? If you want to drop the front of the bike.. how much, in millimeters, should you adjust at a time? how much does a couple of millimeters difference actually make in the handling of the front end of a scooter?

40mm makes a very big difference (especially due to the change(corner) in steering-crank <--> scooter)
you can also raise your rear shock.

Handling - Steering

So if 40mm makes a big difference how shall i go about testing out the handling of the front.... How big of a change? in increments of 1mm? 5mm? 10mm?

What im looking for is to be able to turn my benelli k2 faster around a u-turn corner on a race track so im looking at ways, like lowering the front, which will help me achieve this...

if its not to much trouble to achieve another angle, i'd try every 10mm and see what it does.