The air doesnt flow through the upper cabin vents - the ones that blow at you - or the defroster vent. I can hear the switch switch the vents and I removed the blower and it works fine and quietly but was full of dust which I removed. I'm guessing there's 300K of dust in the vents. I started to take the dash apart but didn; t go far enough to get to those vents. Wanted to check first for best way to go. Wondering if there's anything besides disassembilng the dash to get to vents and clear them.