So, recently we took the tracker up river to fish. Everything was fine until we went to leave. Boat will crank and idle fine, as well as run about 1/4 throttle. Once past that point it just dies completely. I have replaced fuel tank and fuel line as well as pulled carb and mildly cleaned with carb cleaner and still no change. If I put the motor in a drum of water, it will run wide open throttle but I know there's no load on it. I am lost here and desperately need to get it fixed with spring around the corner. Any ideas?