Yup, the eccentric washer bears against the little shoulders in inside of inner fender to move the upper A-arm.They only go one way, your on the right track. When aligned they get rotated by the bolt head to match what the alignment tech wants. Straight up is neutral and they rotate in and out with the eccentric.
Heads together, nuts out.
Yes and they are a real pain to take apart after the bolts have rusted to the bushing when assembled wrong.In before RC gets a hold of that one!