I had a hard time getting the intake manifold lined back up. There is a plastic piece that lines up on the underside of the intake on three of the holes and I could not get the hex screws all the way back in on those 3 holes. I can only assume it is leaking where those 3 screws are not lined up. Can I just pull the plastic piece aside and tighten the screws back down?
A

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1987 300SDL
187,000 miles