Get a 1/4" x 90* chamfer tool from a tool supply house, or a machinst friend. Spin the tool by hand and re-cut the chamfers. I just did that to a 35 yo Helicomatic hub and then laced/trued the wheel. Worked like a champ. I'm lucky in that I work in a machine shop and have access to that kind of tooling. I'd use those hubs in a heart beat and never look back. You DO know that the spoke bend goes in the chamfer and not the spoke head, right?
Jon