BTW I've been working my way through your site and looked through the tutorial on pulling the lead screws, but I don't see anything on the kind of lube you used to reassemble. Mine needs that cleaning pretty bad, but a while back I put some Mobil1 on the X screw and it was magic. I know the old Bridgport we had at work had a single point oiler system. What would be wrong with oil instead of grease if you kept track of it?