I use 80PG/20VG liquids. I've put in a new 2.2 coil in again. Filled the liquid. Waited 15 minutes. Prime puffed it and saw the bubbles. Started at 6w...ok. Then to 6.5w prime puffed it again...ok. Then to 7w prime puffed it...ok. Then after a few puffs....burnt taste again. Back to 6w still burnt taste. Switched to 3.4v it's ok. But not strong enough. Aaaaghhhh 
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