I have a 2001 Hunter 340 with a replacement rudder that had some play in the bottom "bushing". When checking the play (measuring side to side and back and fore) the black (polyethylene I think)bushing dropped down and rested on top of the rudder making the play worse. Pushing it up firmly as far as it would go eliminated the play. I dropped the rudder to inspect the assembly and am confused why the black bushing is not fixed in place. Any info or insight would be greatly appreciated.