Crossing off items in the ToDo list, slowly. Today: Tapered gibs for the carriage done (..that task was spread over 3 days in all- a few hours each day). Half-nuts (split nut) wasn't engaging properly and wouldn't engage at all in reverse. I cleaned up the 'entries' at the ends with a small grindstone in the Dremel, and ground off a couple of bits of mangled threads. Filed off some burrs in the half-nut assembly in the apron and got the lever actuator working more smoothly. Changed the gears to a coarse thread set so I could get the leadscrew turning quickly and polished the threads and nuts by lapping with carborundum powder and grease. Its working much more smoothly now. Next up - cross slide, and carriage lock