So far I am loving these new cartos supplied by mad vapes. Just a quick question though. What is the best way to fill them? Everytime I syringe fill them until liquid starts leaking from the bottom I get a burnt taste. I only got 2 working good, the others have a burnt taste. Any suggestions for what I might be doing wrong? The two burnt ones had BWB juice in them also. I dont know if that may or may not be the cause or it is something on my end. Thanks