Longtime Protank 1 user here, and while I know some of the ins and outs of troubleshooting the original model, this new ProTank 2 is a mystery. Last night it worked perfectly. Today at work, however, it began to barely produce vapor, taste a little dry at any wattage, and I noticed lots of juice of was collecting in the mouthpiece socket. Throughout the day I removed the head and cleaned it, cleaned the base that the head screws into, and cleaned the mouthpiece socket out. Didn't make a difference. Battery was fine and the coil is fine. I tested both a moment ago now that I'm home. Anyone else run into this? Know of a fix? Buyer definitely beware on the new model unless there's an easy fix for this.