Last year September I attended an O and S scale show in Indianapolis. There were a lot of friendly and helpful people at the show. As soon as the pandemic eases, you might attend one of those shows. The next one I know about is scheduled for Sept 17, 2021. Sscalemidwest.com is the website. They have a nice magazine too. Not quit the answer to your question, but I hope it helps a bit.
Nathan Muenks