Not to bump my own thread, but I was talking to one of my friends and he thinks the negative camber (top of tire leaning inward) could be the lower control arms fault if the hole for the ball joint is rusted/elongated. It took me a minute thinking about it, but I guess it does make sense, since now that I look at it, the wheel isn't always cambered when I park it, and an elongated hole would allow the ball joint to slide in and out of position on the control arm. Which if it was slid towards the outside of the car would give a pretty hefty negative camber. Any thoughts on that one?

Of course living on a Marine Corps base, I can't exactly put the car on stands in front of the barracks (stupid rules!), so my opportunities to get a good look under the car are pretty rare. I have to drive the thing 10 miles to an 80 bay shop and do it there, so it might be a while before I can check firsthand.