Hey guys, I am new to refilling carts. I bought some really yummy juice and have tried to use the methods and videos I've found online to refill, but I am running into a couple of problems. First, I always get this weird slurping sound when I vape? I've tried filling the cart a little less, and that seems to help a lil....also and more annoyingly, I am getting lots of juice in my mouth every time I vape. I am using Johnson's creek, blue polyfill and a syringe. Can someone help out a newbie?