So after using Pyramid teabag carts for a long time, I am switching back to regular cartridges. I find they are less finnicky, don't drip as much. I recently ordered from Vaporbomb, and they included a bag of this cottony filler stuff. I know this is a stupid question, but is this filler for the cartridges? Because I am not sure how much to cut out and stuff in there, but I don't know if I'm even supposed to use it for that! With the PTB cartridges, you basically just pull them out, rinse them off and refold it, but I'm not too sure about regular carts. Any advice would be appreciated.