I just got my new powertech prop. It is a 4 blade 10 inch 10pitch SRA4 tohatsu hub It slides on just fine however the blades are so swept back that they bump the anode fin that hangs down from the bottom side of the cav plate. Does that Anode serve any purpose aside from corrosion resistance? If I cut the fin in half would it affect anything? If I were to cut it I think the prop would rotate without hitting.