I just aligned my JK last night after replacing some parts, and according to our new hunter system at work, the max camber is -.6 on the front before she goes red. With all new components my Jeep has -0.5 camber on left, and -0.7 on the right(which is technically out of spec). I have read online that others have similar specs with a brand new JK, so I don't know how much negative camber is too much before it starts chopping tires up. Too make a long story short though, a little bit of negative camber is OK. Just have the tech who did your alignment pull up the spec sheet from when they did it after the wreck. Most newer alignment racks save the measurements with each work order.