Rudder service?

[bjrow]

Coming up to that time of year to service the boat for winter storage and wondered if there was any service points for the rudder I needed to consider? Have looked previously and found no grease points that were obvious, all works fine atm but would rather maintain than fix later if I need to. We have a Moomba Mondo 2014 build.
Cheers BruceR, Melb AUS.