This is all fascinating! Thank you for sharing! If I can keep bothering you with questions (or if you happen to be able to point me to a place to learn more about harpsichord tuning), I have more questions. But I also understand if you don't want to keep answering them! Despite being someone who doesn't know much about nor listen to much music, I've always had a soft spot for harpsichords.
Why do harpsichords need to be tuned so much more frequently? How long did they take to tune (and how does that compare to tuning a piano)? How was the pricing structured with such a regular need? Were most of the harpsichords you were tuning in academic institutions, arts institutions, private use, et cetera? And not a question but another thought, I'm surprised there were even a handful of people tuning them in your metro area!