I have been having a lot of trouble with my cartos recently. I bought a bunch of Boge 3.0 ohm cartos over a month ago. First two went in my tank and lasted well over 10 days each. Ever since then, they have lasted at most a day and a half. The juice in the tank starts turning dark brown and the filler inside just gets black and the draw gets tight and I start getting juice in my mouth. This is getting very frustrating. I have tried different flavors, one hole vs 2 holes punched in the cartos, pure PG vs pg and Vg mix, varied the voltage of my provari from 4.4-5 ohm. All the same result. I have gone through 12 cartos in the past twelve days, is it just a bad batch or is my Provari possibly messing up? This is becoming very annoying, boges are supposed to last longer than one day. Anyone else experience this?