ok so WTF went riding today for like 6 hours ran great did a plug chop and it was mocco color with a black spot by the tip of the electrode under the bridge thing, then like an hour later it was a real dark brown almost black, but then on our way back the revs kick real far up and started predetonating so i hit the kill switch and nothing turned the key and it turned off. then got back home and checked compression and its the same 180 psi cold, checked spark, has spark, checked the gas flow and its fine, checked for leaks and none, any tips now it wont evern try to start think i could have fouled a plug?