I have a 2000 135 optimax that runs rough in neutral 2000-2600 rpm then stalls abruptly(after about 4-5 minutes) and is hard to restart. If i wait awhile it starts and then shuts down again. If running @ 700 rpm there is no problem and it runs smooth. The engine runs so poor that I can't get away from the dock to power it up. Fuel filter was changed, new squeeze bulb, fresh gas--nothing has worked.<br />Thanks