I've never used bosch pads before. Got the front pair in from rock auto (waiting on the rear to show up so I can't compare). Now from my reading I know they're wrapped in paper and not shrink wrapped, so I expected that. But when I opened them up they seem used or oddly dusty... is this a process from the factory or are these indeed used? It is rock auto so the possibility is there. All hardware and packet of brake grease is sealed and intact. I see no paint removed on the slide ears, juat pad material obviously distrubed