Hi guys. I've been off flavors for around a year now, strictly vaping straight VG at around 5 mg nic. I'm trying to get back to some of my flavors, but for some reason all of them taste bitter. I dunno if it's the pg, the better performance of my coils, the concentration of juices bought 1 year ago or juice gone bad. Or maybe I'm not used to flavors anymore. Mainly the juices are good life vapor juices, Boba's bounty and some others. Any thoughts?