I have my camber set nearly at 0 although it may be very perceptably negative. I did it to correct inner edge tire wear. I'm happy to report that it has resolved the problem and edge wear is finally no longer an issue.
I agree that the car may handle slightly beter with a little more negative camber. My car had over 1 degree negative to bigin with. If you are after eliminating inner tire edge wear you most certainly need to keep it less that .5 degrees negative. If you do, you will sort of need to experiment to see how well the tires wear. I know that mine works great with 0 degrees.
I didn't try to see just how much camber adjustment there was, but others have reported that there was about 3 degrees of adjustment (1.5 degrees each way).
Don't try to make this adjustment with alignment equipment. It is very unlikely that you will end up with adjustments anywhere near correct.
If I used my car for racing only on a road course I would have the negative camber up close to 2 degrees and just remember that I would need to replace the tires often.
