Got a chance to take a long ride yesterday and experienced a symptom I thought had been cured. After my bike's good and hot from woods riding (this won't happen at the track with shorter laps and more breaks) it starts to cut in and out at low steady RPMs. I had this issue narrowed down to being electrical last fall realizing jetting or valves would not be heat related. So I put in a new stator, checked the coil and plug boot and thought the problem was solved but hadn't gone on any lengthy rides til yesterday. This is something that only started last year so I know it's a part that's failing and not something that better antifreeze or engine oil can fix so please spare me those sales pitches. I'm almost convinced it's gotta be the CDI box but my mechanic says they can't really be checked. I'm wondering if it can be sent somewhere to be tested. Anyone else have these problems or a good guess as to what might be the fix?