Neos 70cc full throttle cuts out

Hi I've got an 2014 neos 2t with an airsal 70cc kit mallosi variator upjetted and ran great in a texhnigas silent pro exhaust, recently got a stage 6 rep pro and so much more powerful, but recently cuts out at high speed! Any body else had something similar happen?

 

most likley carb. try upjetting a bit. what carb have you got or the size?

 

It's a standard carb size dont think it's 17.5

 

It will go better with a bigger carb to match the cylinder.
And upjet it!
If its running lean its bye-bye cylinder....

 

I've ordered an 17.5 carb any ideas what main jet I should run? Think it was 60/62 standard so I was think of 72! Witch may already be in the 12mm standard carb

 

Literally no idea with putting some jets in the carb and riding it