It should be pressed against the cup. 0 lash in mechanical terms, If you will.
You can fluff the wicks by gently hooking them with your tool on each side of the cup and gently pulling up. It isn't quite necessary to do so, but some claim it helps. Just be sure that they aren't out of their slots, above the cup, and that the cup is centered in the tube before replacing the o ring. Be careful not to press too hard on the o ring, or you may pop the air tube and rubber grommet out the bottom. Should you happen to do so, dont panic. Merely remove the tube and gently pull on the stem of the air tube til she pops back in. This is the only way these get destroyed: when the air tube pops out too roughly, the tube comes off in your pocket/holster, or the cup isnt centered and you ram the ring home. Should either of these occur and bend the tube (unlikely) near the batt connection, she will forever leak. Barring that, the only occasional issues are slight gurgling and minor leakage onto batt connector. Trick to this is to unscrew it n blow gently through mouthpiece and refrain from tossing it, not letting a friend suck chrome through it, not letting it reside upside down for long, and don't fill past the joint of the air tube and the black flex sleeve (bout 1/4" from bottom of cup).
Some have converted tanks to run these, but I an currently unsure as to the most efficacious method for so doing. Happy vaping, bud.
You can fluff the wicks by gently hooking them with your tool on each side of the cup and gently pulling up. It isn't quite necessary to do so, but some claim it helps. Just be sure that they aren't out of their slots, above the cup, and that the cup is centered in the tube before replacing the o ring. Be careful not to press too hard on the o ring, or you may pop the air tube and rubber grommet out the bottom. Should you happen to do so, dont panic. Merely remove the tube and gently pull on the stem of the air tube til she pops back in. This is the only way these get destroyed: when the air tube pops out too roughly, the tube comes off in your pocket/holster, or the cup isnt centered and you ram the ring home. Should either of these occur and bend the tube (unlikely) near the batt connection, she will forever leak. Barring that, the only occasional issues are slight gurgling and minor leakage onto batt connector. Trick to this is to unscrew it n blow gently through mouthpiece and refrain from tossing it, not letting a friend suck chrome through it, not letting it reside upside down for long, and don't fill past the joint of the air tube and the black flex sleeve (bout 1/4" from bottom of cup).
Some have converted tanks to run these, but I an currently unsure as to the most efficacious method for so doing. Happy vaping, bud.