Hey Bloodtrailer, did you find the brace height you were looking for? I can’t find anything online about Savage River bows but maybe Appalachian Archery can help you. I didn’t see much on their site for traditional bows but maybe it’s not updated. The website is http://www.appalachianarchery.com/
Sorry I couldn’t be more helpful. You might try calling 3Rivers, Kustom King or Archery Past to see if they are familiar with that bow or if they have a “best guess” estimate to start at. Most bows require some tweaking even when you start at the recommended settings.
Good luck.