Alright going on holidays in 3 days take the boat out this weekend for last local run and on Saturday the tach will only go up to 2500 rpm and quit boat RPM still winds up. As well the voltage gauge nomrally at wide open runs about 15 V and now sits at 13 V and does not come up at all. Which is it Regulator/Rectifier or stator? Please help family vacation in jeapordy!:'(