I HAVE A 04 POLARI ATP 330, CHANGED THE OIL AND FILTER, SPARK PLUG, AND PUT THE ORIGINAL MAIN JET BACK IN IT AFTER A TRIP TO HIGHER ALTITUDE, BOUGHT EVERYTHING FROM DEALER. TWO WEEKS LATER LOOKS LIKE IT DROPPED A VALVE, BUSTED THE PISTON, CYLINDER , BENT THE ROD, AND BEAT UP THE HEAD PRETTY BAD. CAN ANYONE TELL ME WHAT WENT WRONG? THE ENGINE STILL WAS FULL OF OIL. ALSO LOOKING TO BUY AN ENGINE FOR IT NEW OR USED. ANY HELP WOULD BE GREAT. I'VE ALREADY CALLED THE DEALER AND MAN THATS SOME EXPENSIVE PARTS JUST TO REBUILD AND AINT SURE IF THE CRANK IS GOOD OR CASE, SO I AM JUST TRYING TO GET ALL INFO THAT I CAN.. THANKS