I looked for anything that could help me, everywhere for that matter and nothing so here it goes. I just got my first cartomizer tank today since ive used everything else for a while I figured why not? Although I thought everything would be simple and self explainatory I was wrong. It came with a rubber circle piece in the package that I have to idea what it does or why it was included I think its a cartomizer holding ring according to a site I found but I dont know what that is or if that is infact what it is. I dont know how to fill it properly and all the vids I find are for bigger ones that seem so much easier to fill. There is no polyfill in this type and when you take the drip tip off and look inside the cartomizer its just an empty tunnel until a rubber circle piece with a hole in the middle is positioned above the coil wick assembly. I dont know if you would want to fill that area with liquid or notm wouldnt think so, dunno, dont see how it could hold 3.5 ml otherwise though. Im hating life at this point. I wanna break it and set it on fire and watch it burn right this minute but I just got a sample pack from Johnson Creek and I wanted a fresh piece to try out the chocolate truffle. Anyway ill include picks of the tank and I use a SID. Please help before I do something the tank will regret.