"I have a 2005 Yamaha 225 Vmax Hpdi that will miss as soon as I give the hotfoot some throttle. It idles fine (in neutral)and runs great on plane, but as soon as you put it in gear and troll or drive slowly, it will steadily miss. Sometimes, if I try to press the throttle on through the miss, it will fall on its face. If you back of the throttle and give it a quick shot of the hotfoot, it seems to clear it out enough to jump on plane. The problem is at its worst when the engine has had time to cool off. Does anyone know what the problem is?"