1) Always fill your tank up nearly full.
2) If you get occasional flooding, take your tank off of your PV, and shake out the excess juice thermometer style out through the drip tip.
3) Refill when around 3/4 empty.
These three things, assuming everything is correctly screwed together correctly and airtight will fix flooding and gurgling without fail.
The gurgling is gone and it is producing enough vapor, battery is charged it's been refilled and cleaned and the taste continues. just a slightly burnt taste