[brianlay]

I doubt that your pulling symptoms and low sound are related to the ride height.

If the corner heights were adjusted for equal weights side to side (corner balancing), the factory allows for +- 5mm difference side to side. These chassis are simply not that precise.

The more likely cause of pulling is incorrect alignment, or possibly worn tires.
The loud low sound is usually a symptom of a bad wheel bearing, typically in the rear.

To answer your question about front height adjustment, turning the screw clockwise will raise that side. There is no requirement for the screws(or corner heights) to match side to side.