I just got my SI kit and started vaping full time this week. I ordered the sample packs of pre-filled carts. So I'm not using any other nic juice or dripping or any of that yet. I haven't even pulled out the little end cap. But I have noticed that a couple of drops of the nic juice is starting to show up around the hole and the top of the end cap. Nothing is leaking out at the battery end. This has happened on two different carts so far. I keep the cart attached to the battery and vape when needed. I usually keep my volts on a table/desk/nightstand, so it's on the side and I don't turn them upside down. Am I doing something wrong? Do I need to get drip tips are something to replace the end cap? Any help would be appreciated.