I'm working on an old Pocket Watch and the balance cock screw hole in the pillar plate is partially stripped. The screw will not fully raise out of the hole when unscrewed. But, the screw threads are fine. I'm thinking blue Lock-Tite, but first came to the board for their thoughts.

Thank You, Bill

Bill,
I have had good results closing the hole a little with a round faced punch and making new threads. Be sure to pick a punch that is a little larger than the hole and give it a light tap with a brass hamner. Do this from the bottom side of the hole.