MY 88 FORCE 125 HAS BEEN A GREAT MOTOR FOR YEARS,BUT NOW I'M HAVING A PROBLEM WITH IT RUNNING ROUGH @ 2000 R.P.M.'S THE ENGINE STARTS AND IDLES PERFECT.WHEN I OPEN IT UP IT REVS FOR A SECOND THEN BOGS DOWN AND WILL NOT PICK UP. THE ENGINE WONT'T GET OVER 2400 R.P.M. I DON'T KNOW IF IT IS A CARB. OR ELECTRICAL PROBLEM.I WAS WONDERING IF ANYBODY ELSE HAS HAD THIS PROBLEM.LIKE I SAID BEFORE IT STARTS VERY EASY AND IDLES ON ALL FOUR CYL. UNDER 2000 R.P.M ITS FINE HIT 2000 R.P.M. AND IT FALLS ON ITS FACE.PLEASE HELP 