I just bought this motor with a 96 hydra sport 17. The motor runs very good. My question is, when running on the hose/muff, should water be coming from the center of the prop? In the past, I had a Yamaha, Mercruiser and a Force. They all had water coming from the prop while running to flush. This Johnson does not. Only exhaust. The tell tell has a real good stream of water coming from it. Thanks