ANYONE THAT CAN STEER ME TOWARDS THE PURCHASE OF A USED 1986 MOTO FOUR 80CC TECH MANUAL I'M A LISTENING.LET'S TAKE A STAB AT PROBLEM SOLVING.ATV (MOTO FOUR)RUNS GREAT WHEN COLD BUT AFTER WARMING UP,IT STARTS TO STALL AND YOU HAVE TO PUT THE CHOKE ON TO GET IT STARTED. THIS REPEATILY HAS TO BE DONE UNTIL WE FINALLY USUALLY HAVE TO PUT THE BIKE UP.I HAVE SO FAR SET BOTH VALVES TO SPECS-CHANGED ALL FUEL LINES-CLEANED CARB-COMPLETE TUNEUP-CLEANED FUEL FILTER SCREEN.ANY SUGGESTIONS? COULD IT BE A ELECTRICAL PROBLEM?