Second fix. The flap deciding if the air comes out the top or middle vents, that lever had almost no effect. And I couldn't adjust it to solve it. I know this is not working-as-designed, but I drilled another hole in the lever, getting more travel and now I can actually control if air comes to windshield (up to 70%) or into car (up to 90%).
If you drill this hole, make sure you make the metal you drill into stationary, and if you like me had the bottom of the drill flipping up to crack the windshield if the drill got stuck, put a thick cloth in between.
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