I have two 2001 Yamaha, 200hp, HPDI's, Model: TXRX <br /><br />Occasionally, the port engine will not get over 3500 RPM's. When the problem occurs it will always max out at EXACTLY 3500 RPM's. <br /><br />If I slow down and turn the motor off.. then on again, the problem disappears. The problem...