Do any of you drippers get vapor lock? What I mean by this is that sometimes after taking a hit, I can look down into the drip tip and see vapor trapped inside. If I am not paying attention to this, then the next time I drip it doesn't go all the way to the atty and sits on top of the vapor. Then, when I inhale, I get a big wet mouthful of juice. If I pay attention and either inhale the little bit of vapor or give a small quick puff, then I don't have problem with the juice. Anyone else notice this? I use a Delrin T-tip.