Maybe someone can help me. I have a 2014 33ft. Grady White canyon that I purchased last year. The generator does not run for longer then 30 minutes, even with no load. I have had two generator mechanics work on it (at a cost of $2,500). It works dockside, but not underway or even drifting in the ocean. Both mechanics told me the generator is fine. I have also put fresh fuel. I also rewired the batteries so two batteries are connected to it. There is no error code, it just shuts off. I can start it again after 15 minutes. Any suggestions would be helpful.