I have been making a lot of new batches of liquid lately but it seems no matter what I am not getting strong flavor. I thought originally it was because my VG content was too high, which was at 90%. So now I'm at around 70/30 VG / PG and still very weak flavor. Even very strong fruit flavors I only can taste a bit on the exhale. I would do more PG and less VG but it seems once I get to around 50/50 there isn't much vapor production. I sometimes wonder how some vendors get so much vapor production from a 70pg / 30vg mix. Most of my liquids are at about 15% flavoring so I'm sure it's not because I'm not putting in enough flavor. All I use is VG, PG, flavoring, and nicotine. Oh, I have also used sweetener such as sucralose to no avail. Any ideas?