Loose Beyblade... HELP!!

Well, I got my Rock Aquario two days ago, and I've been shifting pieces around with my other beyblades. Today, when I battled my brother, it became loose. Pleaase help me fix it!!
You could've asked this in the "Ask a Question, Get an Answer!" Thread.

rock aquario is generally a sturdy bey, so i do not know what you did to it, though my storm pegasis from the same sst is a little loose-the clear wheel is loose

but really, next time ask this in the link posted above^