Wondering if this is normal or if there is a fix. My in cabin (no AC) blower motor has different levels of how much air it should push.... 0 1 2 3 4. The problem is that if I put it on anything but 4 it sounds like it is off, you can't hear it and it doesn't push much air. Then if I put it on 4 it kicks on and blows super hard and is really loud. I'd like an intermediate between the two.