You have to grease the kingpins every 1000 miles. It is even mentioned in the manual. I will do this tomorrow morning and will post some photos then. But I am sure there are already some photos of the greasing nipples of the kingpins in this forum, maybe someone can post a link. I cant because cut and paste does not work on my android tablet (or i cant figure it out how that works ;-))
Here is the gomog guide to locations of the nipples etc beneviro
http://www.gomog.com/allmorgan9.html#Dynamics