Please Clarify
Are you saying that the fibreglass rudder is rotating around the carbon fibre rudder post or are you hearing squeaking when the rudder moves?. If the rudder is no longer firmly attached to the post, you better take immediate action before it separates completely.If there is squeaking, lift the floor behind the wheel and locate the source of the squeaks and lubricate as needed. Could be the rod bearings in the linkage. Also check your autopilot. If the drive chain was too tight, you may have an autopilot bearing problem. Its located in the wheel housing below the pull out storage box in front of the wheel.