Funny you should find the rudder bushing different Tim. I am pondering a new rudder for YOT. I contacted Foss Foam who supposedly made the original and they can't find that mold. Perhaps the Cal rudder explains that and the bushing issue you are having. I made my bushings because I had a chunk of Delrin laying around and a lathe in my basement. Couple that with I wanted exacting tolerances with appropriate running fits and I'm cheap. I agree the 27 is extremely tender for such a heavy boat but on the plus side it locks in about 15 to 20 degrees of heel and takes off like a shot. We hit 10 knots this summer a few times but couldn't sustain it long enough for the GPS to capture it on the log. Fun just the same to see double digits even for a few minutes just the same. I am looking at the rudder made by Rudder Craft but they need the rudder to determine what I have. Thanks for the info as this may explain the confusion I am experiencing