Once I set a bow, I leave it. B50 will stretch and need adjustment often at the start, but should settle down after a while.

Had a widow go out of tune after getting caught in the rain.
D97 string, twisted up to spec and it was fine.

Kinda surprised it stretched.

I think most strings settled down around 200 shots.

Avoid endless loop strings. Lots of shops have em cheap for recurves. Get a flemish steing as the overlay will be leaser at the start of the loop and youll have less string knocker.

3 Rivers sells a decent B50 flemish string for old recurves for about 16 bucks IIRC. Guy on Ebay makes nice ones too on custom colors, HoppyBeer was his name. Dunno if he still makes em.