ok, thanks Drew. I will just get the empty ones then. I just recently started liking the cartos. I couldn't get them to work right the first time I tried them. I finally figured out that the air hole on my adapter is too big and it made it seem like I was sucking air
thru a straw with very little vapor. That is one more thing I need to add on my next order. As you know, I like the 555 alot and thought it would be nice if they were already filled when I got them but not if it's not your 555.