I have a 2007 nissan titan. I am trying to remove the dash ac/heat vent. the one to the left of the steering wheel. On the top of it there is a little storage compartment with a rubber matt. when you lift the matt there is a small nut there. That is the only one i see. I tried getting a screw driver behind to gently pry it out, hoping it will pop free like allot of dashes around stereos. does anyone know?