Hi Bob,
I've taken the stripped gear into a gear maker today and he is making two, in nylon, for $120.00 Aus. and will take about a week, so not too bad, if the gear was made in steel or bronze then, he said, they would cost more, but can be done. I thought about the material and concluded that the nylon gear will act as a shock absorber and is the sacrificial component between the two steel gears, should there be a problem. So went for that.
Chrish
BSA Owner had them made in steel a few years ago. He has a few Altons. He told me that he has had good luck with them.
David