stephen1979 - Thank you for confirming Retriever's post! I don't understand though what it means that you can drip a few drops of another liquid into the juice well to try out different flavors with a Reo. Do you do this without a cartomizer on top? Can you please explain this if you have the time? I don't know what a juice well is.
The juice well is a cup that surrounds the bottom of the cartomizer or atomizer. It's there to catch any overflow from squeezing the bottle. You don't need to drip into the well. Buy a few atomizers then do the following...blow out the atomizer prior to use to clear any primer that may be in there, screw it on, add 6 drops of juice, let sit a few minutes, vape a draw or 2, add a few more drops and vape until you get a burning feeling or lack of flavor...repeat with 3-4 drops.