I have a Nonsuch 30U and have been cruising for a few months each year since we bought it two years ago. The rudder is very stiff. It starts out fine in the morning but after five or so hours sailing/motoring to out destination it starts to get much stiffer. The zerk fitting was missing so I replaced that and have greased it well (grease is showing on the top bearing). That helped some but it has not solved the problem. I am in Florida now and having the boat pulled in a week . Any and all suggestions welcomed.