I am running a 6mg luquillo breeze juice from The Vial in a PT2 with a twist type battery. when I filled my tank the juice was clear, vape was strong flavor was great. I then noticed about 3/4 through my first tank the juice was turning yellowish, vape and flavor remained the same. After refilling the tank, the juice had turned somewhat brown by half tank. dumped remaining juice in the tank, rinsed, dried and refilled. same thing happened. this time I let it go until 3/4 after second refil and the juice was dark caramel color. again no noticable flavor or vape change. This time I dumped remaining Juice, rinsed, dried, and changed the atomiser, turned down the volume to somewhere between the 3.2 to 4.0 marking on the batt. Same thing........ any ideas on why this happens?