I have a Icebear Fuerza (Grom Clone) that has the Loncin 125cc with Electric Start.

I have a Mikuni VM22-133 carb and an exhaust.

I'm pretty much at 60-100' sea level. Does anyone have any recommendations as to what to start the jet sizing at?

My pilot is at 30 and my main is at 110. Needle is right in the middle. The engine idles fine. However, when I crank the throttle fast, it sputters and dies. If I ride around normally (say with traffic), it rides fine and I have no problem accelerating through the gears and up to speed. The only issue is when I crank the throttle.