I have a 2001 5.7L Mercruiser with throttle body injection. The motor starts fine when cold. After it is at running temp and we stop for lunch when you go to start it one of the injectors sprays so much gas that the motor will not start. I need to unplug that injector and it will start on one and then I plug the other one back on. It runs great after you get it started. I had the injectors cleaned by a injector company but the problem is still there. Any ideas?