I am posting this because I think it will be useful to other people in the future.
I bought a great horsehide jacket a long time ago. A few years back, the insertion end pin in the main zipper came off. The only way to fix this is to get a new zipper, which means taking the jacket apart.
I had a terrible time finding anyone to fix it. I looked all over my area. Cobblers sent me to tailors who sent me back to the cobblers. I finally got a price of $140 from Lost Worlds Inc., but I read things online that gave me the impression that I was likely to end up in a dispute with the guy who ran it, so I didn't send the jacket in.
A week or so ago, I came across some references to Barnacle Bill's Racing Leather. I sent Bill an email, and he said he would fix the jacket for a hundred bucks, including return shipping. I sent the jacket off on Wednesday, and it arrived here today, six days later.
From the front, the jacket looks unchanged except for the new zipper. The sewing was done so there is no new line of thread holes. On the inside, the new thread is about 1/8" from the old stitch holes, but no one would see it without looking inside the jacket. The workmanship looks very good. He saved a jacket that would run a thousand dollars to replace.http://www.racingleather.com/