You're having feeding issues. I'm gonna guess you were a heavy smoker like myself.
You have to bear in mind these were not made for heavy chain-vapers like us. However, if you take the phx bottom coil fresh out of the package, and dry vape it, you will notice you get a cloud of vapor or two (this is a pure PG/VG solution known as primer that the manufacturer puts on the wicks to prevent cracking during shipping). Almost all manufacturers will prime the units they send out, because silica strands crack when they rub and bounce against each other. Pull the seal, pop the tube off, pull the stem, and using a pair of delicate scissors or nail-clippers, trim the wicks to just on the verge of being inside the cup. Re-assemble, fill, and vape. When you take a drag, and see bubbles go up immediately, you've got it right.
