Wow.  Awesome discussion...wish I knew what the heck it meant  
  
I just adjusted the vertical height of the headlights (maybe too far...).  At 25 feet they were barely hitting the garage.  I brought them up to aout 3 feet.  Only driven around town but haven't noticed a real difference--need to get out on some really dark roads.  
  
I still feel like there is another issue going on.  I think my next stop is to Advance and have them check the battery, etc.  I'll report back with those findings.