For poor return to center the caster would need to be way off. The wrong camber in the rear that picture shows would not cause it. However that reading suggests either worn bushings in the rear suspension or something was slightly bent.
Your issue is in the front suspension, as it was there before the new struts and mounts were installed I would look at other components first. Namely the steering rack, the tie rod ends and the lower ball joints/swivel bearings. It would only take binding in one of them to cause this issue. A simple test would be to jack the front end up enough to get both front tires off the ground. With the engine running, put your hands on either front tire at the 9 and 3 positions and try to turn the tire like you are making a turn. Does it move freely or do you feel an easy then hard spot like binding? If you turn the steering wheel does it feel smooth as you turn or does it get stiffer as you turn it back/forth? Do you hear anything like creaking or popping as you turn the wheel?
Nov 6, 2018 at 8:03 PM