I feel left out of the carto circle. lol I'm carto challenged. I've never gotten a decent vape without flooding and headaches! I guess I will stick to dripping and clearos.
To add to Jen's post, some people are allurgic to VG or PG so try 100% of one than the other to make sure that's not one of the issues. Also there is alot of things you go through when quitting, could be a part of it as well