Strut rod washers.... correct way to use.

Just went out and looked at my38000 mile 68 cuda.Also looked at my 79 Warlock,Sorry I don't have a duster here.Both the same way.Looked at 70 dart-it has over 90000 miles,all cupped over the bushings.Let us know what you find.Maybe thats just how they did them in St Louis.