Not all mom and pop ops are the same; some have a robust operation that works pretty well. My personal exp comes from ownership of the Hagerman Cornet 3. Not only is Jim H available and visible on various forum sites, he answers questions in a very timely matter. I would buy from Hagerman again.
IMO, any private cottage operation is a direct reflection of the owner and their personal way of conducting business. Sounds like the subject of op’s product is in need of help.