MY RAIDER HAS BEEN RECENTLY FARTING ON WHEN I ACCELERATE THRU HIGHER REVS ,SO I THOUGHT IT MIGHT BE DAMP, BUT ITS GOT WORSE AND IT HAPPENS EVEN WHEN WARM AND TONIGHT IT CONKED AS IF MY PLUGS HAD BEEN NICKED WHILE I WAS DRIVING??? ANY IDEAS?? COULD BE TDC LEAD OR SUMMIT?? COS I TWIGGLED ON WITH A FEW BITS NOTHING IN GENERAL AND IT WAS FINE??? COULD IT BE DIZZY? COS THATS BEEN SQUEELING ON A LOT MORE THAN USUAL?