just wondering if there’s anyway I can modify the air flow from my HVAC system. In the winter I like to use the heat on only my feet however, the problem is when that setting is on I also get almost equal amount of air coming out of my defrost by the windows and windshield. I have taken it to three dealers, and every single one of them tell me that the calibration is in spec to manufactures. My question is, is there anything I can do possibly take it to a mechanic shop or somewhere else to do some programming or calibrating? Because before my feet get warm my face is actually hot. And that is very uncomfortable . lol. HELP