water works good to thin VG but 20% holy crap you could be just overloading yourself the highest i go is around 5 but have a couple of flavors that i kick up to 10% and after a day or so i have the same problem and have to stop vaping that flavor for a few days and it resets.......
edit below......
i would go straight VG as well when i use PG it has a bitter nasty taste at the end when i am blowing it out and can taste it for a hour or so afterwards.....just a idea
edit below......
i would go straight VG as well when i use PG it has a bitter nasty taste at the end when i am blowing it out and can taste it for a hour or so afterwards.....just a idea
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