Skill and patience required:

One of my younger bros heads the music dept at U of Wi. Madison

The other (the middle one) does this stuff all day every day.
I saw a report once where musical repair is one of the lowest stress jobs there is . seems at least moderately stressful.

He has done a dang good job on the few horns I l had experience with, including a Selmer Mark 7 and my own Holton MF horn.
Also an older Bach I managed to ding up pretty good.

Yeah my brother in law has a small business repairing both stringed and wind instruments. Been doing for years. He just retired from doing work for the Los Angeles school district.

I had to fix a sax once, but it was a pink plastic one and I just used super glue.

Amazing level of craftsmanship! Guys like this must be really hard to find these days.

Jeff