I notice in my 06 HSE that the two center air vents above the HVAC controls blow air at somewhat different temperatures. The center driver's side blows ice cold when the A/C is on, but the center passenger side blows just cool. It's not a huge difference but it is noticeable. The temps settings are set the same on both sides. Isn't the air going through these two adjacent vents coming from the same place? Why would they be different temps if the temp control is at the same setting on each side?