When trying to reinstall the lower arms put in the coil spring then the a-arm,put a jack under it and jack it up till you can connect the spindle . Connect them then jack up the a-arm into the mounting brackets and secure. Will save you lots of aggravation and time!!!! I know took me two days to figure it out.

Did something similar when I replaced the front springs. Because of the arc the floor jack swings, you want to reach across under the car to jack the lower arm.