I’m thinking about ordering some premade 90/10 vg/pg and then adding nicotine and flavoring I tried the different calculators and not resume on them but would like to make a quart of the 90/10 in a 9mg of nicotine level not really sure what flavoring I’ll use but would like to know about what I would have to mix the nic and premade to end up in the 9 mg level so I have a idea where I need to start any input would be greatly appreciated