[tahoeblue]

Pushing air down, as a cause, is an interesting hypothesis. However, I have one ear that almost self equalizes the other very difficultly, especially in the head down position. The increased presser necessary to equalize head down is way more than would be necessary to push a small bubble down hill. On a bad day it would require enough pressure that it would make me see stars. (Of course I don't do that.) Also if were a matter of pushing air down instead of up, there wouldn't be good days and bad days, the difficulty only varying with differences of gravity. I am wondering if the problem is vascular in nature, gravity causing the swelling of veins, or causing intertissue swelling. Any thoughts?
Richard