Hello! So I have an aqueon hinged lid. Mine came already put together. I assume everybody has the ugly black stripe down the middle where the hinge is right? I didn't make a mistake and not take a part off? I see other people have said they struggle to get the hinged lids together and I was happy mine was ready made (minus the plastic that covers the back but i can't use it because of my filters). Does everybody else have the ugly black piece or was I supposed to use the plastic piece I think goes at the back on the middle?