Consider putting a weep hole in that repaired tip. Find out how it goes on so the hole can be placed on the back side. Get the hole as far down as possible. All my Unitron tips have (had) a weep hole at the bottom to let out moisture. Otherwise you have a water trap. You would probably never have a problem considering the quality of your work inside and out unless you live very damp or get accidental water exposure. I tend to look at these vintage scopes in terms of multiple generations past myself, at least equal to what they have already lived. That may be slightly extreme.
Go to entry 59 and 60 in this link. It's where I mentioned the weep holes.
Thanks for the comments and advice.
I did look over your thread and a few things I noticed looking at your pics were:
The end of the tripod wood that goes into the leg tips on the legs in your pics is pristine compared to what I have to work with.
My legs have significant wood loss from how it had been stored, there was a lot of decayed wood gunk inside the tips when they were removed.
I also noticed that your tips have a slight angle to them most likely from wear while in contact with the ground when in use.
That may or may not be why there is a weep hole.
2 of my tips showed even less wear than yours and had no holes before powder coating and are now covered with powder coat.
I am planning to use an epoxy to fill the tips before inserting the legs.
It should cure and hold the tips on and I will drill new screw holes afterward.
The nice thing about the 3 holes in each tip is they can be rotated 180° and the holes are now over "fresh" wood for the new holes.
Like you I hope to get this scope to a point where when I'm done with it maybe it will see another 66 years of use.