Recently the motor has been acting up, it's a 2002 f115 with 200 hours on it. It has been randomly loosing power underway and surging, stalling out and then other times it will run fine very hit or miss. I'd say 2 out of 3 fishing trips it gives me no problem. Also quite often after the boat has been run and I shut it off and then try to restart a few min later it will not start up. Then I let it sit 5 min then it will if I advance the trolttle and give it some gas while starting. And other times it will start fine. Where do I start?