During my first annual with my Phoebus A1, we were looking at the rudder control arm connection and noticed an odd bearing. It's designed to move in multiple axes, so it seems like the bearings being exposed is notmal. But, having not seen such a beast, is there anything to pay more attention to with exposed bearings, different approach to lubrication, etc.

Picture of the connected assembly and the bearing:http://imgur.com/a/kbptW

Glider is a Phoebus A1 (1966)

Thanks!
JD