2015 BCX Renegade 800 etec. I've had it happen twice now, Running great lots of power, flip the throttle and it acts like fuel was cut off and almost dies, then it comes right back and runs fine, 500 or so kms between events. Fuel regulator was already checked and has the fix installed. Fuel filter has also been replaced. Clutch was just rebuilt and pulls 7900 rpm steady all day long and no power loss event after the "stumble" happens. Thoughts??