Check out the Cremona Revival YouTube channel for more content on this subject.
Here’s a video that touches on scroll geometry.
EDIT: this channel and the accompanying website, http://davidofsantabarbara.blogspot.com/p/blog-page_11.html , are a product of luthier @David Beard But if you search for previous Maestronet threads, you’ll see that reasonable minds differ on the soundness of his theories.