alright guys hopefully someone could lend some answers here.. my windows fog up HORRIBLY in the rain. I turn on defrost, switch the knobs between inside air circulate, outside air circulate, ac and heat.. NOTHING works EXCEPT full blast heat on the windshield will clear it only a quarter the way up. It poking sucks i cant drive with it. besides just putting rain-x on the window why doesn't the window clear? (brand new heater core btw)