FWIW (about ), the last bearings I purchased came from Calico Coatings w/ their CT-1 coating. The mains are FM 119M 3/4 groove tri-metals and the rods are ACL chamfered tri-metal bearings that Calico said are the equivalent of Clevite's H-series tri-metal.

Although I asked for the Clevite parts in the first place, they said they didn't stock that particular part # and the in-stock ACL versions were a little cheaper.