Todd,
I will try to help you. It did take me awhile to get my Odyssey dialed in like I wanted it. Only after I attended the Odyssey school did I have the understanding of the machine it takes to get everything adjusted like I wanted. You need to understand that the direction of the brush spin creates a force that will want to force the brush out or hold it in. So, depending on whether the brush is in forward or reverse mode, you will need to adjust the pressure for each direction. For example, (and I hope I get this right) in the forward mode the front brushes will want to pull out into the car on their own so you will need very little air pressure for those brushes. But this same forward mode will put your back brushes in a spin direction that will make them want to stay away from the car, so you will need a high pressure setting. In the reverse mode, everything is just the oposite. So to summerize...you have two pressure settings for each side brush, one for reverse and one forward mode. The best way to get them how you want them is to go out in the bay with your computer and exercise the inputs as you adjust each valve for each brush arm in each mode. I personally have very little air pressure (4-8 psi) on the arm when they naturally pull them- selves into the car. Its been awhile since I have had to mess with this, so I can't off hand remember all my settings. Just remember that it is the forward brush which ever direction it is going that will need little help (low air pressure) coming into the car and the trailing bush that will need the help (i.e. higher air pressure). Once you get them set, they pretty much stay that way. However, it is a good idea to check them once a month.
If you get a chance to go the the Odyssey school in St. Louis, I highly recommend it. Let me know if you need further explanation.
Mike