Just got this boat. Doesn't start under normal condition. Will start with some priming (squirt a little gas into the carb throat). In checking fuel, when I pump the primer bulb, I can get fuel to the hose on the input side of the filter/pump but no fuel comes out of the pump/filter. To me, this means that I am not getting any fuel to the carb. Am I diagnosing this right? If so, is it much trouble to repair the pump? Filter/screen is clean.