I have a couple of extra trigger springs, I don't even remember where they came from, I will see if the baggie is labeled.
ETA: All the baggie has is a part number.
Another source, MVA
https://montanavintagearms.com/winchester-parts/
Think you could make a Uberti part fit? Much less expensive.
https://www.cimarron-firearms.com/hi...ts-uberti.html