I have two 30ml bottles of unflavored eliquid. I'd like to add flavor to them. Is there a calculator I can use? I have pg, vg and nic if I'd need to add more. I just don't want these bottles to go to waste. I also have a 120 ml bottle of vg/pg 60/40 with 24% salt nic. I plan to break it up and make smaller bottles of flavored salt nic liquid. I don't mind if the nic level goes down some, nor do I mind if the vg drops some as this is intended to be used in pod devices. But I need something to tell me how much flavoring to add. Anyone know of a calculator that can help?