I would take diagonal measurements of the arms to see if the arms/arm are bent in any way .
Centre of rear bush bolt to centre of ball joint , centre of rear bush bolt to centre of middle ball joint bolt .
Centre of front bush to centre of ball joint , centre of front bush to ball joint mounting bolt ,these should be fixed points .
The best way would be to remove the arms and take measurements of the arms in the same way .
You can also do the same with the sub frame take diagonal measurements from subframe to fixed points on the chassis rails or like .
Cheers
Centre of rear bush bolt to centre of ball joint , centre of rear bush bolt to centre of middle ball joint bolt .
Centre of front bush to centre of ball joint , centre of front bush to ball joint mounting bolt ,these should be fixed points .
The best way would be to remove the arms and take measurements of the arms in the same way .
You can also do the same with the sub frame take diagonal measurements from subframe to fixed points on the chassis rails or like .
Cheers