I've split D4 6U tracks with solid pins but what do I need if the pin is not a solid? Looks like one style I drive a small plug in then the back side out. What about the threaded plug! Any idea of the size bolt and thread pitch I'll need for that task? The machine is not local and I have no ideas of the style 'till I get there and it's way out in the boonies and want to have all the needed stuff. Oh! The machine is a D4 7U and don't know the exact age yet.