Dude - you can get a good epoxy or superglue but the balance will never be as good. These things are precision tuned and even the addition of a half a gram of glue will cause wobble. I’d just swap it with YYF.
Alright, I’ve seen enough mods go to to have a BIT of an idea of a fix you could use, if you were willing to go through a bit of work.
RiceRocket will mill a piece of delrin to fit where the hub fell out. If you wanted to, you could try your hand at it But I think I’d send it to Chris before I screwed anything up. It’d be interesting to see what he could do.
Also, contact YYF and see if you can get it replaced without having to send it in. Let them know what you want to try and do. I’m sure they would work with you at least a little bit.
They have a life time warranty if it is really messed up but like my arrows wouldn’t lined up but seemed to fix it by tightening it they don’t line up but it plays smoothly and the vibe isn’t bad but i contacted them after the 14 day money back guarantee was gone so they will fix it if it breaks at anytime
North-protostars are factory tuned to be as smooth as possible, so you will never have it back to normal playing condition. Shoot up YYF, they will be happy to replace it.