I have owned a 1985 Cal 35 for the past three years. It has (or always has had) a small(?) amount of play in the rudder - meaning when the boat is on land the rudder can be moved back and forth on its vertical axis, by hand. The rudder does not have rotational play (vis-a-vis no cable tension issues). I have noticed some involuntary rudder movement in a following sea.
Anyone''s thoughts as to the normality of this issue, diagnosis, the probability of future failure, cost to fix, etc. are welcome.