Hey all. So before the mail ban I ordered 2 gallons of unflavored ready to flavor juice. I had being ordering 80/20 for years but they ran out so I had to get 70/30. Turns out it really aggravates my throat and I cant vape it without constantly having to clear my throat. I was planning on buying some food grade PG and up the mix from 70/30 to 80/20. My question is how would I go about doing it? I assume it would be a little over a gallon correct? Can anyone help figure it out?If not I have 2 gallons of juice I cant use. Thanks so much!