hi I was using a cheap ego battery with my kanger mini pro tank 2 with 2.2 ohms coils and hangsen caramel flavor. when the cheap battery stopped working last week.I got me a kanger evod vv the.problem is that I was getting very good flavor from my cheap battery i'm not getting as much flavor from the kanger evod vv.i don't know what i'm doing wrong the coil in the mini pro tank 2 is about 5 days old .i'm vaping this at a setting between 3.6 and 4 volts.If I go higher say 4.5 the flavor is further diminished if I go lower than 3.6 I don't get vapor production I don't know what to do please help please guide me.