Hi!!! Does anybody know if the China Yo-Yo Corporation Championship 2011 yo-yo use z-stacks? Thank you so much!!! PLease respond on this post and PM me thank you so much!!!
Not unless they stole them from YYF. 
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To be honest I Z-Stack alot of throws.
Aslong as the hub area is big enough and it take’s stack;s it works
Done it on my 888 and others.
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There’s only one way to find out…
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how!!!???!!!
Try it it wont hurt.i believe it does tho.