hmm, when seeing the thread title, thought it was about diy juice mixing, and was going to say something like, I use 8-12% of the primary or base flavor, and add other flavors at 2-5%, depending on the recipe and the accent am trying to create.
Frak, I generally dedicate a tank to one flavor, and try to keep a different flavor in all me tanks, but hey, some mixing can lead to some fine vape, others, not so much.
Vape long and Prosper.!!!!