There was play in the lower bearing, so I wrapped the pin tight with pattern maker Mylar from my local sail maker, leaving about a 3/8" gap longitudinally and cutting it just above the bolt hole on the bottom. I then used Scotch Tape on the bottom and in the 3/8" gap. The first time the Mylar buggered up as it was inserted, but I did it again coating it with grease and tapped the pin down with a rubber mallet and a dowel.
The rudder now moves very smoothly with no slop at all and since there is nowhere for the Mylar to go, it should last for a long time.