• Not arguing, but from (very) limited experience usually just the bottom on a ball bearing races. As the top bearing assemblies are pushed apart while the bottoms pushed together hence the indexing. Or is that wrong?

    @TooTallTim wouldn't that cause indexing on both races, not just the top? Have no idea of the cause just trying to figure out so I don't cause this in the future. As I know little of the bikes past, this is a more academic.

    Thank you for replying.

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