While investigating a new vibration on our 1993 Hunter 335, I finally dove under the boat to have a look. Found that the strut had completely failed and was hanging unpside down on the prop shaft. Failure was a rough, jagged separation about 3/4 to 1 inch from the hull end. In looking at previous stories in the forum I came across a few that talked about galvanic corrison. Our strut had not been painted and because the strut has no contact with the prop shaft (with zincs) due to the rubber cutless bearing, could gradual corrison and normal vibration have resulted in a fatigue failure? Or would there have to have been a more significant contact with a log or something to cause the failure? Anyone have a similar experience? Does Hunter have exact replacement struts available?