While surfing, recently, I happened upon a site, complete with pics,
detailing how the guy drilled and tapped the top of the upper ball-joint
and installed a zerk fitting. It's a little late in the night for my head
to recall where I saw that. If I think of it.............
In the interim, I will say that, as easy (and inexpensive) as this is to
install (new,) why not move on to other things?
Miguel