Hollow sound after upgrades, pretty sure its the carb

[linkkokiri83]

Okay i have a 50 cc smm jazzie , pretty standard chinese scooter, recently had a 100cc kit (professianly installed).

Afterwords i have installed:
Performance cdi cable (black and orange), performance cdi box (blue/purple box), the small airfilter that pops onto the back of the carb, 20mm carb (jet sizes unknown as of now). New variator amd weights (gram weight unknown as of now). Pretty much the standard upgrades.

The scooter runs solid, no hesitations or sputters, held a steady 40 mph (keep in mind im 6 foot, 270 pounds) . the ride does have a louder, but more hollow sound. Im pretty sure its the carb now , needs adjustment amd possibly a different jet set. Ill update as i cam find more about it.