Mbk ovetto roller weights

[Wkzx]

Hi, I recently had new roller weights put in my 50 cc mbk ovetto which weight 6.5 gram but they've been in there for a week now and I've lost 20 mph somewhere as it only does 32mph now but if there a decrease in gradient in the ground it will accelerate up to 45 and hold it there until I brake but then I won't go back to that speed unless I go down another hill

[at106]

It's a 50cc scooter and legally should only do 32mph.

You've probably fitted lighter rollers than the original ones. Generally lighter rollers increase acceleration but decrease top speed and heavier rollers increase top speed but decrease acceleration.

You could of also got oil or grease on the belt?