If you do a bit of a search you should be able to find someone who can cut you a new cylinder. There are not many people good enough to do this these days, it is something I am going to do in the near future. Bob Tascione is just such a guy but wether he is in a position to or not I couldnt say. It all depends on how badly the customer wants the watch running and how much they are willing to spend. If you have a watch makers lathe why dont you give it a try? Its not impossible but will take patience and probably a few attempts but it can be done.
Saunier’s Treatise on Modern Horology is an amazing book and tells you how to cut a new cylinder, its not a cheap book but is like an encyclopedia on watchmaking and maybe some of the other members can suggest books that cover cylinder making? I would very much be interested in how this turns out.