I'm working on a 1946 Ford Super Deluxe station wagon (woodie) that has metal wrapped leaf springs. Each spring has two zerks embedded in the wrap. The zerks are mounted in a special cage nut that has a flange that holds it in the metal wrap. I have 3 of the 4 cage nuts, but need a fourth. I've searched quite a bit and haven't found anything. If anybody is familiar and knows where I can find this part I would appreciate it. Thanks