i have a 1990 150 force that runs great except when you try to run real slow or idle which it will not do it dies i have had carbs. rebuilt head gasket replaced and head shaved. now i am told that the stator needs replacing when they check the fire sometime the top two cly.fire sometimes the bottom 3 the dealer tool for checking the fire only checks four cly.at a time so i dont know about this please help