There are many variables that change the taste of a juice. The OD of the coil, whether it's coils are close together or spread apart. How you place the cotton in the juice channels. The fit of the cotton in the coil should just slightly drag when you pull it through. The base metal of the coil, and/or ratio of metals in an alloy. Temperature control or not. PG/VG ratio. The flavoring ratio of your extract vs. your base. And many, many more variables including atmospheric pressure.
Experiment, experiment, until you find a method that's right for you.
Also airflow, you have to say goodbye to a tight mouth to lung. I use a hurricane clone, I would love to use it on the tighter air flow settings but I get way more mls through my coil with the air flow wide open. Which on a hurricane, gives me an airy mouth to lung draw.
I now use RTAs instead of RBAs because keeping the coil wet at all times helps a lot too.