gurgling is caused by liquid getting into the atty tube, this can be due to the atty not being tightend down enough or through re-filling and getting juice in the atty
A really quick way to get rid of it is to take the tank off your mod, cover the mouthpiece with a piece of tissue and fling it downwards (like you are flicking paint off a paintbrush)
The excess liquid gets expelled into the tissue and you are good to go. if you are outside don't bother with the tissue, but be careful not to bless anyone with your juice