I have a 510 and solved that occasional (sometimes constant) wet gurgling sound when dragging on it. I was running my fingernail around the edge of the mouth end of the cart (getting the lipstick off) and the end cap seperated a bit. So, of course, I had to take it off to see what it looked like.
Under the cap there is a blank space then another seperator with a hole in the middle like the end cap. That space had a bunch of juice in it. I don't know if this is supposed to be like that but I flicked it out, put it back together, and no more gurgling! It draws a lot better too, smoother, and no sound.
When it starts doing it again I just open it up and flick it out again.
Under the cap there is a blank space then another seperator with a hole in the middle like the end cap. That space had a bunch of juice in it. I don't know if this is supposed to be like that but I flicked it out, put it back together, and no more gurgling! It draws a lot better too, smoother, and no sound.
When it starts doing it again I just open it up and flick it out again.