Bring some “c” clamps in your dive. Watch what happens inside the boat if you push up hard. Leak? Put a piece of metal bar between the top of the rudder and the
hull ...you can put something on the end to spread the load and pull the bar down...then push up. I’ve seen wire eat quadrants or jump out of the grove.
Check everything...it’s very difficult to do much at sea.
Clunks now only get worse in higher seas. Cable pulleys should not wobble.
Lots to check ...good luck.
The manatee crew