I like vaping Johnson Creek PV juices. I was just wondering if I could add a drop or so of a DIY flavor to my full carto/hypo to spice things up-- a drop of bananna, or blueberry, etc, with the JC juice. I won't be mixing the actual juice or worrying about nic levels but I was wondering if I could add a drop just for some diversity. Is this a good idea? Which vendor would you suggest? Thanks!