Please can I have some help and info on exhaust rollers and speedfight 2

I have just bought a speedfight 2 and I want to make it faster I’ve been told to get a Leo vince exhaust witch I have ordered and some new rollers but I wasent sure what to get but my mate has gave me some new 9.5g ones and some 2.75g ones would I be able to put 3 of each in my speedfight 2 and would it make better top end and better acceleration I’m new to the scooters just looking for some info as I don’t want to brake it all info would be greatly appreciated and yes I have got it all derestricted

 

They are too heavy and too light if that makes sense?
Try some about 5g and see

 

The best and fastest thing is to buy a set of rollers within your range. Can be found on most scooter sites And try out the best weight for your clutch. Since its a little bit individual for every scooter. That is if you want to find the sweet-spot. Unless you lucky, you order wrong size.and then you have to order a new set again and again

 

Sorry to butt in but im having problems setting up my carb on my Speedfight 2.
The carb is a Gurtner PA370 the scooter is all standard apart from iv cut the silly pipe on the standard exhaust and welded a plate over the hole but apart from that everything is standard.
Does anyone no what the standard main jet is or what jet should I us now if altered the exhaust gas flow