* For the double-bearing set near the tension-adjuster, I've got 2 Fafnir bearings, OEM style. It takes a good deal of patience to get these adjusted so they are exactly parallel with the blade path.
* For the upper & lower bearings near the "cutting action" I finally found aftermarket (VXB I think) bearings via a link from a knowledgable poster on this forum. They are the "fat" bearings like the OEM size, but they're rubber-shielded rather than metal-shielded.