samizdat
·If the watch was working well for 24 hours, then it doesn't sound like you need a donor movement (which will probably have worn out parts as well) unless you damaged something when stripping it. The hairspring issue may very well be recoverable, it depends on what the damage is.
I think that the best is to get it to a watchmaker even though it is in parts. It may cost more as the watch arrives disassembled but leave it to the watchmaker to advise and most of us won't take on a small "get it over the line" job so, expect to pay for a full service. Ask the watchmaker for advice on how to send it as you don't want all the parts rattling around and damaging each other.
Good luck and I'm sure it will be a lovely reliable watch at the end. If you can get Al (@Archer) to look at it, that would be a bonus.
Cheers, Chris
Thank you, agree with you on getting to a watchmaker. Archer actually already declined, so I'm considering other folks recommended by Larry and others. Parts are all secure and could be ship-ready shortly.