Originally Posted by
Kontact
I don't think the steerer groove grows back when you use un-keyed washers.
True[1], but hub axles are available unslotted and so preferred.
[1] was told once of a die being run down a steerer backwards; said steerer having a crack at the top of the slot; then line of braze through the slot, then file-work, then get the die off and so re-cut the threads.