Hi...I am fairly new to vaping, but I have filled a few tanks in my short time-frame thanks to all of the great videos . I just received some new juice and filled a new 6ml dual coil tank and did a few dry hits. I put the tank on the battery and took a hit, my lungs and mouth filled with the most foul, burnt smoke. I did a few more dry hits, enough that I noticed the juice level went down a little bit, it still had the nasty taste. I don't want to dry hit the carto even more, but I have no idea what I have done wrong. Please help...Thank you.