I have a 1979 Sunfish. When you lift the rudder up on the tiller the tiller would spring up and hold it into place. Now it does not even do that. I have little to no mechanical experience. I have been studying the tiller to see how this should work. There is a spring on the shaft that you push down to secure the tiller onto the stern. That I understand. There are two other springs on each side of the rudder. For the life of me I cannot understand how this would mechanically provide spring resistance when pushing the rudder up or down at either end.