I know I'm fairly new at this but after 3 days of use, I was constantly flooding, gurgling, and generally getting mouthfuls of liquid. If I wasn't doing that I was inhaling burnt atty flavor instead by not having my carts topped off fully.
If you're using a 510 one thing you can do is use a paperclip or small diameter eyeglass screwdriver to pop the end of the mouthpiece off by inserting it in the hole along with popping the inner circle out in order to use a rolled up napkin to soak up the mess inside the cart. Plus popping off the end piece lets you know for sure if you're flooding the cart as there will be excess juice all inside.
What fixed my problem totally was to do the blue filter floss mod. I keep a fish tank and had that on hand and just trimmed off a small piece, rolled it up loosely, and inserted it into one of my carts to compare with another.
The cart with the old stuffing needs to be topped off every few hits and floods like nobody's business. The cart with the blue filter floss in it is easier to vape, hasn't flooded on me yet, plus doesn't have to be topped up anywhere near as often.
Remember, a flooded cart is wasted juice.