While working on my Evinrude Sportsman, I noticed what looks like a fracture in the prop. I know that I could have it repaired but, I would prefer to find one that is in better shape. My motor has the right angle gear case . I believe that they were also made with the fisherman [down angled] gear case. Does anyone know if the props on these two types of gear cases were interchangeable, or do I need to find one specifically for the right angle case? thanks in advance