Hello - this is my first post - so happy to have found this place!
Anyway, heres another helpful tip for popping the grease caps off of your old speedkings. After removing the screws at the bottom of the posts, and then the spring and rods, you can actually pop the caps off pretty easily (at least in my case) with the rod end of an old bass drum beater. Just insert the rod part of the beater into the post and push the grease cap from the inside out. To get the grease caps back on I used a mallet to knock the caps back in place. However, in order to avoid scratching or damaging the cap, I placed a towel between the mallet and and the cap as a cushion. It didnt take much too much force to get the cap back on.
Hope this is helpful,
James