I have a 1984 YTM 225 dx runs good idling and wide open throttle but anything in between it cuts out like spark is breaking up would that be the cdi or stator? my jetting is 115 main and 22.5 pilot only mods to this bike is full dg exhaust and a 10: 25: 1 std piston needle is 3rd or 4th notch from top of the needle uni air filter with factory air box