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HI all, I'm new to the forums here, but have been a reader for awhile. I have a question, I'm new to the Yamaha's but have worked on boats for over 20 years. I've got a 03 300 hpdi that runs great for a short run, but sometimes will loose cylinders #2,3,5 and number 6 pulses on and off. As soon as I shift the engine to neutral and back to forward all the cylinders start firing again. Any suggestions? I can watch the diagnostic computer and see the shift switch activate so I don' t think that is the problem, but who knows. Any thoughts