Another suggestion is to contact Richard Ash who owns Folkcraft. They do all their cases in their shop and Richard is always up for a challenge and is very accommodating. He welcomes custom orders (new ideas) on his dulcimers and I'm sure he'd have no problem doing a case that would fit your Galax dulcimer. His cases are well padded and very nicely done. If you had him do an envelope style case, it would be more streamlined from what you have. I'd give him a call.
https://www.folkcraft.com/pages/contact-us
updated by @susie: 01/23/23 08:30:07AM