my motor starts to miss at full throttle. its like it wants to break out and run but something keeps it lunging back and forwards.i have had comp test done,rebuilt carbs,new fuel lines and bulb, new plugs, de-carb was done on it and it seem to help it. i just don't know where to go from here because it is getting exspensive. first boat so i'm still learning someone help me before i go crazy!!!! that's is when the engine is under a load