Can someone help me out. I've been sub ohming for the first time on a kanger sub tank mini for a couple months now and I gotta say though some nice vapor is produced the flavor department is lacking and these kanger sub tank .5 ohm coils don't last worth a Damn and flavor drops big time within a few days with a new coil. anyone else experience this? Seems to be hit or miss and I want something more consistent. Any recommendations on a better sub tank? These kanger coils are a joke. And just so everyone knows I only use a istick30 so with that being said is there something better I can use on that mod? Currently vaping Charlie Noble pistachio ry4 6mg at 28 watts and flavor is great the first day then by day 2 or 3 it sucks. Same with other juices Wtf? Should these kanger coils bite the dust that fast? Help!!!