I HAVE A MAX IV AND I WAS CRUISING UP THE RIVER TO TEST OUT MY BILGE PUMP I JUST PUT IN AND I STARTED TO TAKE IN LOTS OF WATER, SO I PULLED UP ON A BOAT RAMP AND SAW WATER COMING OUT NEXT TO ONE OF MY AXLES. (POURING OUT). SHOULD I REPLACE ALL OF THEM OR JUST THE ONE SEALED BEARING THATS BAD?