Sorry for the delay, been a hectic week for various reasons. I've grabbed some pics of the main pivot bearings I have currently out of a frame, including what I hope are useful shots of measurements and markings that might indicate the part number of the bearings and spacer size. My callipers aren't working so manual size indication only, and they wouldn't fit inside the bearing or spacer so I can't give an accurate inner diameter.
Better pic of top hat bushings too, which I guess I'd be willing to part with.
Hope it's useful.