A lot of flavours don't say if they're PG or VG or what they are. If I'm making 80/20 juice do I just calculate the ratio neglecting the flavor. Say I use 20% flavor, unless the flavor is 100% PG based I would never get an actual 80/20 juice. If it was water, say, I would have 20% water and if the remainder was 80/20 I would get 80% of 80% + 20% of 80% or 20/64/16 water/VG/PG. I'm confused.