Also do know that "gunning it hard from 0 to 1/4 throttle" and experiencing a hesitating or bog before it picks up RPM is completely normal in most cases. Especially without a pumper carb.
So your testing methodology may be inherently flawed here. You're treating the 0-1/4 throttle action as if you'll be drag racing it. That's typically not how you'll be riding it.
|