Hey everybody. So, I tried boiling two of my old pre-filled cartomizers today, but I'm not sure how it worked. The "crackle" inside seems to have been completely rejuvenated, but as of yet I'm still not getting any vapor from it. I didn't put more than say....10-12 drops in, but would the crackle mean that it is in fact working? I just received my first bottle of VG juice today, so I don't want to waste any. Any thoughts?