Yea I read some questions about correcting for eye height and I thought of this. What do you think? Also, I have noticed a sound akin to a paper towel ripping some nights as I lay my head or turn my head on my pillow. It has a subtle feeling like something shifts. I notice my teeth dont meet the same way on consecutive days ( I notice in morning). I think you would call it occlusion. The effect is worse if I sleep on one side of my face. Problem is, sleeping on my back makes my back hurt.