Mike and Lynn.
Thanks for the great sources for parts. I should of done my homework before asking for help.
I went through my manuals and finally found a picture that shows the choke linkage. I couldn't find the choke linkage that I posted for the simple reason it wasn't used on my original carburetor. The picture in my workshop manual shows the manual choke cable attached to the other side of the carburetor.
Unfortunately the shaft for the choke plate doesn't exit from that side on my current carburetor.
Will have to do a bit of a rethink on how to get my setup to work properly.
Thanks, Peter