THERE'S the difference! I keep my airflow about the same as you, but I typically run between 30-35 watts. You may want to bump that up a little to reduce the gurgling/flooding... the problem is that it's wicking more/faster than you're vaporizing it at your current heat levels. I ran into the same thing with rayon wicks in my Silver Play and Orchid tanks. Rayon wicks faster than cotton does, so a lot of times you need more power to compensate and keep everything balanced. If 30W is too hot for you, then you might look into picking up one of the drip tips that has airflow adjustment/holes in the drip tip. That allows cooler air to enter the tip as you vape and cools it down before it gets to you... or you can cheat and do what we used to do back in the day. Just open the corner of your mouth a bit and bring in a little more air that way...
I'll give that a try...It always seems anything over 22w is too hot to me, but I recently got a drip tip that has the airflow holes (Thanks LLB--hopefully tonight I'll be able to post the pic that I've been meaning to for a week now!!)