I've been vaping for about a month now (25 days & no real cigs!!) and my eGo-C (& eGo-T) were working fine untill I started re-filling my tank cartridges. I'm very carful to re-seal the tank and even bought the "soft rubber" caps which I thought would do a good job of sealing. The problem continues, juice leaks down to the battery & leaks up into the mouth/vent path of the cartridge tank (& into my mouth). Vaping becomes restricted & messy (not to mention shirt pocket stains). I've tried keeping the unit up side down in my shirt pocket as soon as I'm done vaping, but that only lets juice go into the mouth/vent path causing more vaping restriction. The only thing that keeps me from having to break down my eGo's & cleaning is keeping it horizontal with the mouth end tipped slightly downward. What am I doing wrong? This is incredibly inconveinient and costly (wasting juice). Please help. I use 100% VG juices.