What's up with these new rotors?

RustyRatRod said

That in my mind is the only legitimate reason to remove the race. To grind some reliefs to knock the races out later. I would endorse that move.

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That's the best idea yet. Knock em out and put some just like em back in and save the ones that match the bearings for later. Might as well put some /6 rings in your next 440 build also.