I just found this on the Zombie page:

Weight Disk Tuning
Adding more friction to the edge of your weight disk increases spin stealing ability, however it reduces defense. To [do] this apply a layer of stickers around the edge of your weight disk. This layer should not change the shape of the edge of your weight disk, nor should it noticeably increase the weight of your weight disk.

Which goes against this rule:

Applying stickers on locations of the Beyblade that are not designated for stickers, e.g.
around the edge of a Weight Disk or on an Spin Gear to tighten it.

Should we keep this up? There's more on some of the articles that contradict current WBO rules.

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I saw that too. I just thought it was funny though. XD

Delete it.

What about the stuff about the Bearing Tuning? Delete that, too?

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Don't delete it, just add a note at the beginning that declares it illegal under WBO rules.