I want to be able to leave juice in my clearomizer when I pack it. Right now it can leak out the drip tip (or mouthpiece, since you don't drip a clearomizer). I want to find a closed cap that will screw onto the clearomozer where the drip tip does but can't find any? Am I missing something? Don't other people have this need? I am aware of the rubber caps that come on most clearomizers but they fit loosely and can still leak.