If the camber is out of specification, it is likely due to a bent component or worn bushing in the rear suspension. Replacing the affected parts should correct the camber.
In some cases, it is possible to adjust the camber in the rear of the Lincoln LS by eccentric bolts at the lower end of the shock absorber mount (camber bolts). However, this is not recommended as it can affect the structural integrity of the vehicle and may result in premature wear of the shock absorbers or other suspension parts.