I have a Werrd Pacquiao and I heard it can be hubstacked. I emailed Werrd but got no answer on getting some Jimmy hats soooo I ordered a Hubstack kit and some Z-stacks. Will this work? in theory there should be no problem I put an A-bearing in it and it seems like the same size and that it will work, my only worry and why I bought Z-stacks is that the spike at the end of the Pacquiao might stick out on regular stacks. I think they put spikes on there to deter people from doing this and poke you for not using Jimmy hats. Has anyone had experience with this mod? will it work? I will try to post pictures when I put it together and let you know how it turns out. Or go to the hospital because of fatal poking 
it’ll work just fine, jimmy hats and z stacks are the same height. And I just tried it on mine.
the z stacks actually fit really nicely. I’d upload a picture, but my camera is hard to get to right now.
And jimmy hats are quite rare, so I don’t think you’ll be able to get a pair unless you go to some type of a werrd booth. They were selling them at worlds, got myself two pairs 
But even the dude at the booth was saying how rare they are, so it would be really hard to find them after.
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Thanks, Yea thats why I ordered the kits from YYE, I gave up on the Jimmy hat thing a long time ago, Werrd is kinda hot and cold on their release activity. I wanted to do this hubstack thing because I like the color and how smooth the yoyo is, but when I got it it was lighter then I thought it would be so it is kinda gathering dust right now so I want to put some stacks on for fun and to get a little weight on it.
Ahh, gotcha. Yeah, it’s amazingly light. I like it though. lol
oh and stacks will add a little vibe. not too much, though. just thought I’d throw that out there. Have fun with your pacquiao