i have a force 125 1985. WHEN I TRY TO START IT THE ENGINE LUGS AND WONT START . I PULLED ALL PLUGS OUT AND IT STARTS FINE.I REPLACED THE STARTER . AND THE BATTERY .AND CLEANED ALL THE CONNECTIONS . IT STILL LUGS. WHAT I WAS WONDEWRING IS DID THEY MAKE A HEAVY DUTY STARTER. THE ENGINE TURNS OVER JUST FINE AND ONCE STARTED RUNS FINE.