Hi Jim,
I have to say that's a real nice repair job on the inner legs and way better than how the machine came out of the factory.
Are your legs still loose at the bottom? On my machine (which had a hard life before I got it), one of the lower cages was completely missing and the other was almost worn through. I know you have it back together now but for reference, the part number for that cage (retainer) is 3501681M92. The top cages (which you have) are 3501693M2. The wear pads are available in differing thicknesses. I can supply part numbers but I remember they were pretty expensive (you need a total of 32 pads) so I made my own out of industrial nylon.
Also, I think I can clear up the mystery surrounding those threaded studs and it's pretty boring. They are simply mounts for the rear road lights (tail lights). While my 50HXS only has two studs on each side you can see how they work in this poor quality photo (and I know, my tail lights are not in perfect condition).
My parts book suggests sometimes the mounts go the other way up so the lights can be either high or low mount (maybe for different countries) so may be that's why yours has three studs.
Again, congrats on the nice repair job.
Chris.