Can someone direct me towards a video or tutorial on a fool-proof method for filling 510 cartridges? I have tried filling it until it "looks slushy", filling it until it pools and then dabbing off the top, using Pyramid Tea Bags, doing the straw mod ...... and everything I have tried LEAKS. It's making me absolutely crazy. Some are worse than others, but I find that I now have to carry paper towels, napkins, etc, to wipe off the leaks ... I don't care if I have to buy cartomizers, if I have to do some other mod on regular cartridges, or what. But please help me stop my leaks ;-) What works best if this is my priority?