I replaced everything from the tank to the carb with the exception of the fuel pump. I DID install a new fuel pump kit (gaskets and whatnot). I also did the carb rebuild thing. The fuel pump does pump fuel, but evidently it's still not enough to keep the bowl filled at full throttle. Once I get to about 3/4 throttle, the motor starts surging. If I squeeze the bulb, the surging stops and the motor runs fine. Will a brand new fuel pump fix the problem, or have I overlooked something? Bear in mind that every fuel line has been replaced with 3/8 line except from the pump to the carb. Those fittings required a new 5/16 line. Also, every fitting has been replaced. Motor is a 1980 Evinrude 25.