Hey you! I still owe you a PM, I promise I've not forgotten.
As for the sound, in humans - we sometimes call that "rales" - it may mean there is mucous in the bronchial sacs - like when humans have bronchitis or similar. The only real way to tell is to listen to them breathing with a stethoscope over their lungs, do you have one (lol, I do)? Give Tootsy our best and I'm hoping to get to your PM before the end of the day.
Ann
Unfortunately, it probably means a trip to the vet if you actually think you're hearing "gurgly/liquidy" sounds in the lung area.