I just recently purchased an 18 ft sol cat, an on the rudders there is a cable that attaches to the top of the rudders and terminates with a ball type end. Everything looks good up to his point but, at the point that the ball is to be retained to the piece is missing. The piece on the other rudder is about 3in long 3/4tall and 3/4 wide and has a slot in it. The person told me that I purchased it from that it is for if you run into shallow water it will release the cable and let the rudder kick up. I am wanting to know what it is called and maybe where I can purchase one.