I am currently taking the slop out of my Prindle rudders. I finished the P-15 last week and am working on the P-16 today. I cut a large teflon fender washer down to small strips and inserted between the pintles and castings. Additionally, I cut and fitted small nylon posts between the pintles and the rudder gudgeons.
The result is a solid feeling on the rudders, with no looseness. I have not sailed the P-15 since doing this project. I suspect I will have to adjust the rake because the rudders were so loose, they were raking back when running.
Did you have to adjust the rake on your rudders?
dan