I'm tired of my bottom coil VE3's and Kanger Evod's gurgling and leaking. I saw a trick where a guy took the rubber grommet off of another coil unit and turned it upside down on top of the one that faces down over the coil/wicks, so when it is screwed into the clearo, it creates a nice tight seal on the stem. It works great, and I'm getting no leaks or gurgling however it pushes the pre-existing rubber grommet down tighter over my wicks. Is there any risk of this rubber heating up and melting? I don't really want to inhale melted rubber. Would I taste it before it got to that point? If this isn't advisable then I'm going back to top coil designs with long wicks...never had any trouble there.