before I go dismantling my dash looking for some insight. the passenger side floor vent exhuasts air no matter what setting I have my vents set to... the system cycles through floor, defrost, mains etc. perfectly. its basically as though something is preventing the slide to seal off that particular vent, the drivers side theres no exhuast. that can't be normal as I lose alot of air due to this. let me know what some ideas are. thanks