[neonlarry]

I would not worry too much about caster. Its almost impossible to set it yourself and if its off a little it won't affect tire wear. What it will affect if its off and you have manual steering is effort required for initial turn-in and how easily the wheel returns to center. If you have power steering you probably won't notice. But like said above get a professional alignment. A home alignment if fine if you know what you are doing and have the proper tools but most people don't.