I didn't get it 100% fixed, however I redid some of my grounding to be setup more like this:
http://www.msextra.com/doc/general/grounding.html
That seemed to help a bit. So I think what I'm going to do is add some better grounding to the car in general. I bought a 25' spool of 4awg wire from Fleet Farm so I'll just be creating some new ground, replacing the old stock cracked stuff. Hopefully that will help more.