Before I did any of these things, I'd call around the longer established shops in your area, and ask whether they might have a 1.37 x 24tpi die. I have one, but since I'm in New Zealand I'm not much use in this case. DB
Jim McCoin wrote:
> My suggestion to Bill was to use a steel track cog to chase the threads , after reading Toms suggestion , the light went on over my head , splitting a junk track cog and spreading it open with a screw driver to get past the damaged threads is what I would try first .
> Jim McCoin