KymcoFan
Variator has usually 6 rollers and its a very easy job if you have air tools, if you dont it can be a little harder to remove the Variator. All you do is pop the variator nut off, pull off the variator and there are six rollers behind it that lay in grooves, upon acceleration these rollers move outward or inward i forgot but that makes your belt rise and begin to move. to change the rollers they are on the backside of the variator.you just take the old ones out and drop 6 more in . Some scoots will have better acceleration with only 3 rollers, some with 6 so its kind of what you wish to try first.
3 rollers however can be tricky because when you replace them you have to use the other three slots instead of where you take them out of.