Well I took the tip off, and the little white filling of the cartridge fell out and was stuck in the atty.... Does this happen alot?
No, it doesn't happen a lot. If you were using that cart then it means that you either vaped it dry or it wasn't very full to begin with. Aside from prefilled carts tasting nasty most of the time, this is the other thing I really hate about them. It won't hurt anything. Just make sure that you get all the
threads left behind off the top of the bridge.
Your carts should be refilled when you notice a change in the flavor or when vapor production drops off. If you
vape them dry then your atty will get dry. Dry attys don't last as long and it can kill them.