I have a 1985 Mercruiser 140MR. I just replaced the impeller and still can't get water from the stern drive with dog ears and a garden hose hooked up. There is no blockage, but a guy told me he had similar problems with the dog ears that only forced water in from one side and just had the suction cup on the other side. Has anyone had this problem before? Should I just take it to the lake and drop it in and see if it works there?