This is America. We don't trust experts. okay, just kidding. When I wanted my stone steps rebuilt I called a mason. When my brakes went out on my car, I took it to an expert mechanic. When I have questions about climate change, pandemics, or virus transmission, I trust the experts there too! Stepping down off of soapbox, I'll post better pictures of the crack. I suspect it is old not going to close but I do want to keep it from getting bigger. As for the various refinishing suggestions, I'm going as is for now. If, after getting it all together it plays and sounds great and I'm inspired to do more body work, I'll tackle it then. This has been a fun learning experience, especially the refret!