Hey guys I have a question regarding the operation of the A/C. When the A/C is on I have noticed that as I accelerate the cold air blown out only the defroster vent. As the Jeep settles at 55 mph it still has a considerable amount of cold blowing out of the defroster duct as opposed to the dash vents. If I am going much over 55 mph the cold only comes out the defroster duct. Is this normal for the 2000 TJ? The only reason I am concerned about this oddity is that I just had the A/C installed on the Jeep the parts used are all mopar.