Maybe I didn't explain it very well. If you drop your width settings down to 90% (admin / theme settings) then you should be able to see one or more PAL boxes that are wider that the others. It's those PAL boxes that are making the left side bigger than the right when you have your width settings at 100%.
I really don't think it's the table wrappers since the html for every table wrapper is exactly the same, and the table wrapper uses your theme width settings so they do resize dynamicly with the page.
