Dies after 1/2 mile WOT, float level or tank not venting?

[SVjohn39]

 This is a 125cc pit bike but I trust the people on here so... It(the bike) seems to be running out of gas after a while of WOT then after closing the throttle for a couple seconds it will come back to life.

I was thinking that if I adjust the float level it will solve this if it is fuel starvation.

If this is the tank not venting enough I have no idea what to do.

Any help is appreciated

[Afzzr12]

Sounds like float level to me.  Check that and then i would think about the tank not venting.  You know...the obvious simple things first.