This is my first time posting something. Here we go. I have a 50 HP Mercury 4 stroke Carbureted engine. This unit was in storage for many years with no stabilizer in it. Once I got it I had the carbs rebuilt and the problems started. Mechanic said there was water in the fuel, so I completely drained the fuel tank. Still had issue. Motor runs great on idle and low speed. The problem starts once the engine warms up and you are going wide open throttle. Engine starts to lose RPM and then just shuts off. I have replaced the fuel pump and fuel line and still the same thing. Compression is good, as well as new plugs in the motor. Measured the resistance on the coils, and they both measure out at 2 ohms. Any ideas would be appreciated.