I have had bad luck with local boat mechanics they cant find my problem.At idle the motor smokes and seems to load up with fuel.When going up through the RPMs the motor is very sluggish,like it has to burn off the fuel to get going.Then it goes and shuts down at WOT like it just lost spark.Timing is good,tank vents good,fuel pump completly rebuilt,floats,inlet needles both new.Mixture screws set.