Help with stage 6 pro rep set up

Hi I have recently put a stage 6 pro replica exhaust on my Aprilia sr50 R 2014 and I am currently using 2.2g rollers and stiff clutch springs with it at the moment but I have only noticed a slight improvement over standard is this because of the rollers and clutch springs?

Also I have got a stage 6 sport variation that comes with a medium contra spring and 6.25g rollers would this be better and would it make a noticeable difference in performance

 

Try it , as said in other posts, you need to find what works for the scooter, unfortunately there's no "one size fits all" setting.