I have some photos but still can't post any of them. I have developed a plan on how to modify the parts to make it work and the measurements I've made indicate to me that it should work.

I could probably do the work myself but the results would be less than desirable. I believe the proper tool here would be a mini lathe. While I've wanted one for a while, the $500 price tag is more than I want to pay for something that I might use once in a blue moon.

I'm a member of a motorcycle forum where there are a number of amazing machinists who seem to be able to work some real magic with their tools. I've posted there looking for one of them who would be willing to take on this, probably relatively simple, job.

Once I get to the magic 10 post threshold, I'll post what I've got and what I'm thinking so your bicycle gurus can point out any problems with my thinking.