Predator Cutting Out

#1
My predator is cutting out at high RPM like 6k. I have been Running 22 low idle and 37 main jet. Nothing seems to stop the problem. Could I be getting vapor lock from the tank. It only seems to be doing it under a load.
 
#7
No gov no oil sensor.

18 pound springs
billet rod
billet fly wheel


One motor does it and one motor doesn't do it. Built to same specs with same jetting same plugs same coil gap ect ect. It doesn't bog down at higher RPM it just cuts out really bad. probably starts around 6K or so.
 
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