Don't try to re-jet the carb until you have about 5 gallons of gas through the engine!
It will keep running better & better the more you ride it & you will only have to re-jet it again.
I just move the C clip to the second notch from the top (during first 3 gallons) & then to the top notch (only if it sputters heavily) until you have the full 5 gallons through it. (Then check back here & we can fully dial it in!!)