1989 YAMAHA 225 EXCEL. ENGINE SMOKES ONLY ON START UP FOR A BIT WETHER COLD OR HOT; AFTER LONG PERIOD OFF, OR JUST SECONDS OFF. REPLACED OIL PUMP WITH NEW STYLE RETROFIT PUMP AND STILL DOES THE SAME. ALSO; ENGINE IDLES VERY VERY SMOOTH, UNLESS ENGINE IS TRIMMED ALL THE WAY DOWN. THEN IT IDLES ROUGH AND SMOKES. THINKING IT IS A FLOAT LEVEL ISSUE BUT THE DEALER READJUSTED THE FLOATS TWICE AND SAID THEY ARE FINE. THE MOTOR DOES HAVE WEDGE BLOCKS WHICH TRIMS THE MOTOR 3 DEGREES MORE THEN IT WOULD NOMALY EXPERIENCE. ANY IDEAS?
