Okay, the sad part of this story is that I dropped off the vaping lifestyle a couple of years ago. I am the world's BIGGEST idiot when it comes to fiddling with cartridges, cartomizers. No matter how simple the technique that seems to work for everyone else, I always had problems. I'm actually quite intelligent in other areas of life but seem to be cursed when it comes to vaping. Anyway, I decided I had to get back to vaping again and found the tank system. Well ... even an IDIOT can fill these things!! Watched a ton of videos showing how to fill them (pop the top off, drip until almost full, snap lid on, snap onto atomizer and vape away). So I opened my kit in great anticipation. And quickly found that these tanks don't look anything like what I've been seeing so I have to ask if anyone else has used ones like this and, if so, what the hell am I doing wrong! These tanks have two little pieces in the mouthpiece side that have little holes in them. Great for filling with a syringe which I just happen to have. No problem so far. However, when I started filling one, the next thing I knew the juice was pouring out somewhere in the middle of the tank cartridge! Took a closer look and I see that this is NOT a tank cartridge that is an all-in-one mould. These ones are actually two pieces that are joined together (overlapping) in the middle and this is where the juice is leaking from. Now ... are these something totally weird and absolutely garbage or is there a special way to fill these ones?