Help me with a Fidelity Research FR64 part

I'm afraid that the FR64 has a significantly finer thread than a standard metric/imperial machined thread - that is why I started the post...

Can I just say thanks for the efforts, links advice, and then intervention of Chakster!

My next point is this.

My machinist is actually very good, but the FR uses a 25TPI thread which is not standard, not only that but the base is something like 29.37mm diameter - 

this thread is turning me absolutely nuts - some may think I am unstable :) 
24 and 26 TPI is quite standard 25 is not - trust me I searched... Also bear in mind the odd diameter as well

Oh none taken - I'd be a total donut if I put something onto a forum and not expect responses.

I'm in the UK.

I have resolved the issue as @chakster donned his proverbial audiophile cape and sold me a base - in fairness he offered just the nut.

As it happens you can still get the b60 replica from yahoo auctions in Japan - that said I was a tad bemused with how yahoo auctions works so I just did not bother with that.

All said and done I am making my own adjustable arm mount using a micrometer adjustable lab jack

In fairness to me I am only going by what my machinist told me...

Oh none taken - I'd be a total donut if I put something onto a forum and not expect responses.

I'm in the UK.

I have resolved the issue as @chakster donned his proverbial audiophile cape and sold me a base - in fairness he offered just the nut.

As it happens you can still get the b60 replica from yahoo auctions in Japan - that said I was a tad bemused with how yahoo auctions works so I just did not bother with that.

All said and done I am making my own adjustable arm mount using a micrometer adjustable lab jack