Dave,
Thanks for the note. This WAS a lot of work, and I'm not sure how well it will function. There are no metering valves and the plumbing is basically all the same size, so it may mean that in order to properly lubricate the far flung ways, the ones nearer the pump will be oozing gobs of oil. That's OK..it's a real basic system built more for looks than flawless oiling, but there is no doubt that it will keep things oiled.
Not sure what you mean on the Y nut lubrication. All 3 ball nuts will be greased versus oiled. X and Y are supplied by the same single Zerk while Z will have a different setup..haven't done that one yet. Both the X and Y nuts were real difficult to plumb and required homemade adapters and clearance to the underside of the table. Again, this system isn't perfect but I think the grease will make it to the screws just fine.
Stuart