I own a 1982 Sea Ray SRV197 with a 5.0 Mercruiser 228. Boat had a new starter put on first thing as the starter was shot. After that had no problems with starting. Took it out for it's initial run this afternoon and everything was going fine until I slowed down. When I was throttling down the boat all of a sudden quit and wouldn't restart. Fluid levels were good although it started to make a slight chiping/squealing noise. Now I can barely get her to roll over and it squeals a little when it does. Any advice and where to look first please it would be much appreaciated.