I have been vaping for about 6 months now and have tried it all it seems, everything from the cheap 510 kits to what I am currently using, a provari with a dct map tank 1.5 ohm smoke tech carto. Cartos are obviously punched. My question is why do i get either a muted taste or a burnt filler taste, the juices I use are a 70-30 pg,vg mix. I run the provari between 3.7 and 4.0 volts. Would a 901 atty with a drip shield be a better option. I have seen reviews on 901s and people sat they produce the best flavor. Any advice ideas are appreciated, keep on vaping.