If you're using the cad files and drawings that my father drew up in the other thread, let me know if you need a different version or file format. You can contact me via email: chiron at 3nnui dot net
I hope you find someone to make them, I really do. I know others would love to have them. Also, I highly recommend you replace the axle with a slightly longer one just for safety. There's a guy on ebay that can machine you one for ~$60 I think. He uses stressproof steel, which is just about perfect for this application. I think I may even have the data sheet for that kind of steel somewhere if you want it.