My boyfriend and I both have the e cigs and we're fairly new at this but we've seen videos and had people tell us how to refill them. And everytime we refill them we have problems we have to use tools to unscrew it apart but the videos online show you can just unscrew it with your hands so easily. Well last night in trying to change out my boyfriends filter (mind you we changed mine with no problems) well we ended up cracking the glass tank and can't get it back together so now we can't use his and he's pretty upset. He's been using mine but it's hard because I like using the flavors like strawberry and cherry and he likes just plain tobacco flavor. And we don't even know if that glass tank can be replaced. Not to mention were very low on funds.