Hi Kenneth,
A couple of years ago when I was having dramas with 465 gears I spoke to Paul Stacker in Victoria and he said his brother in law ( I think ) can remake gears if he had one to copy. I sent my complete gearset to him and he fixed it up and sent it back. top job. Contact Stacker Motorcycles in Vic and ask the question.
BTW. If you wanna set of wheels made up he is also the man to speak to. He made the wheels for my 125 H. Perfect job. No issues at all.