I wondered what happened to that outfit! I thought about rescuing it too. I used to go to Dunbar (a rebuilder in Los Angeles until closing down in the 90s.) I watched most of their processes, but sadly did not take any notes nor get specifics. The process as I recall it was:
Acid wash the whole tube to remove the aquadag, labels, etc etc
Poke a hole in the side of the neck near the pins with a tiny white-hot tipped iron to relieve the vacuum
Using the wire hot loop, crack and remove the neck
Measure and install the new gun using the lathe with the circle of gas flames
Now is where I'm fuzzy; not sure in which order the following:
Place in the oven, connect the vacuum pump to the protruding long glass tube from the new gun, bake, pinch off the glass tube after evacuated, flash getter (???), bench test the tube for several hours with a TV chasss while waiting for all the shorts to pop off, then finally install the implosion band and spray with Aquadag.
Somebody may remember the rest of the process, and that experience will be a big bonus above the books.
I bet Tom Ryan can add some to this
Charles