Has anyone else experienced low air flow when you turn the fan on high? There is not a whole lot of difference in air flow between high and low setting. The fan motor does gets louder when you go from low to high, but not much increase in air flow. I've only had the truck for nine months and have not used the fan much, so no past use to compare it to. I had to use the AC the other day, and if I keep my face in front of the vent I'm ok, but you can't see the road from there.