I think I may have been able to save these knuckles. After the rework I can not fell any imperfections, flat spots, etc...on the one side. The other side I can feel some of the deeper pits but nothing above the ball surface. Maybe further...
KTC was the manufacturer of the majority of Toyota hand tools included in their tool kits since the very early 1950's, as previously mentioned. Although not a product made for Toyota shops, this roll-up door KTC cabinet fits Toyota tools quite...