Thanks all! 655 bronze seems like what I am looking for and "silicon" was all I was searching. Here are some pics of our problem. Notice the key way offset looking down at top of rudder
, then and bend in rudder with spits in the wood at the bottom. Seems this rudder took a very hard hit on the starboard side at some time. If I am thinking correct also explaining the extreme weather helm
we experiance on starboard tack.