You could get some adjustable camber links if it bothers you, but keep in mind the outside edges of the front tires get scrubbed a lot harder in corners than the outside edges of the rear tires, so a significant amount of negative camber on the front actually improves tire wear.
Planting grass is easy. Scatter the seeds on the ground and cover with hay. The hay will hide the seeds from birds while they work on sprouting. After that, you can tend your lawn like you love it or not; grass doesn't really care, it will grow almost anywhere.
Check out "Fyrstormer's Garage" in the General RC forum.