Yes I am a relatively newbie... Been vaping for 4 months and have been using the ego c twist tank system. I love it. I just bought the smoketech ego dct, I cant fill it up, everythings to tight, the carto dosent seem to work and it came with a small white o-ring that was not assembeled with the tank..I'm just confused. Cant find a video anywhere that shows exactly how to fill this thing up...any tip or video links would be so helpful..thanks