Yeah your best chaging oil, air, oil, new spark plug to be honest.... i have a 125 brought her new and she alright for a 2 stroke... 125 arent made for quickness they made to give ya experience same as 50s.... adjusting little things help a lot i often change the bite on the clutch... simple thigns really no need spending money on it as it wont benefit you in any way get ya test then splash the pennies