I have a 1991 Merc. 200. Motor would not run over 3000 RPM'S. Took it to a local mechanic he changed the stator. Took it to the lake ran fine all day. Went to the lake the next week boat would not run. Took it back to the machanic he said it must of been a bad stator and replaced it. The boat ran fine for awile then went bad. Starts and idles good, carbs are clean, spark plugs are new and compression is good.<br />What could be making the stators go bad? <br /><br />Please Help.............