Hope someone can help me out - I have a Hewes Redfisher 16 with a 2002 2 stroke Yamaha. Runs smooth and clean but lately at wide open throttle (5500 rpm) after a few minutes the engine begins hesitate like its fuel starved. RPMs will drop to 3500 rpm or until I ease up on the throttle. So far it only happens at WOT. If I back off right away or keep the rpms under 5000 rpm it doesn't happen. I just replaced the fuel filter and water separator and also replaced the primer bulb and fuel line from the water separator to the engine. Any ideas? Any help would be most appreciated.