I'm not sure if this has been talked about on here but I have multiple CE4's filling up with "vape." I know it's not smoke so we'll say vape. And It's odd, it's like a water pipe filling up with smoke but it's my CE4 clearomizer. Do you think it could be the rubber nipple in the center? I'll try taking a picture and posting it with this. But has anyone run into this problem, or is it a problem in the first place? I'm the manager of a vape lounge and I know that this isn't normal or common because we use our CE4's for demos. Any input? Please and thank you.