Steve,
I have to admit that I haven't been following your videos, mainly because I know little about Hendey lathes. I did just watch #33 and am intrigued with your project. I don't really have time right now to go back and watch all of the vid's but will do that when I get a chance.
I don't recall when you got the Hendey.........I remember someone on this forum getting one and I steered them to a really good Hendey restore on another forum. Was that you by any chance? I've had a computer crash and burn since then and lost all my bookmarks. I'm pretty sure it was on the PM forum. I know there are several Hendey threads there.
Have you been able to locate a manual for the lathe? I know it seems daunting to tear into it, but I would really recommend that you do. If you think the outside is dirty and nasty, wait until you see inside the apron! I'm sure it is loaded with chips and nasty, old, solidified oil. If you go slow and take lots an lots of pic's as you go, I'm sure you can put it back together. Break it down to major components and tackle them one at a time. I would recommend taking the saddle and apron off as one unit. Remove the bracket on the tail end of the lead screw. Support the lead screw so it doesn't bend. Then you should be able to crank the assembly off the tail end using your shop crane to support it as it comes off.
There is lots of help on this forum. Probably not a lot of guys intimate with Hendeys but most lathes work about the same. I wish you lived down the street......I'd love to help you with this project.
)
I hope I've given you some encouragement.
Steve