I'd love a threading chart! Kind of guessed and kept in mind the fact that White is Singer, backwards. I knew it was a White (117?). That's why I made a bid on it. When it came home, I didn't even plug it in until Tri-Flow, and lithium grease hit all the right spots. It was amazingly clean! Even the feed dogs had little lint. I got over those flat spots on the friction wheel by loosening it and giving it a healthy slide out. Must come up with a "just right" cork to keep that motor back!