You're welcome! As far as being negative, either increase the intake, but you are maxed, so you have to lower the exhaust airflow. As silly as this sounds for trying to cool, it will rely on the intake fans to pull all the air in, instead of making the exhausts overwork and pulling air from the cracks of the case.
If you can feel for where your heat is dissipating from your graphics card (either by touch or a point thermometer), you can pin point where your heat is coming from and possibly that Fox-2 can be placed right at that spot. If you add this, lower your exhausts a little more to help compensate for that.
If you don't mind me asking, what fans are you running in your case?