Really a two-part question:
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How are they attached and stay on so firmly? I mean, I though it might just be a tight tolerance and they are just wedged in place and friction is what’s holding them.
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If that is the case how do they physically get them on without damaging the ring or the yo-yo? Do they just bang it in place with a rubber mallet? Is it different when the steel ring is on the inside of the cup vs outside?
