Well a week an a half ago I bought some Flavorz by joe grape fez e-liquid and really liked it. after 2-3 refills of my tank It now has no flavor when I vape. At first i thought is was vapor tongue or what ever its called but I switched flavors and Im drinking lots of water every other flavor tastes fine. the grape fez was also changing from a clear to dark brown before but now just stays clear. Is it possible that the flavor settled and the first couple of tank refills took the flavor out?