Yes, manifolds always look like they've been lying between the Titanic and the Bismarck so I don't know how any come out easy. I'll have to bring you back a bottle of cava if they twist off. Unfun fact, but I used to work for a place I can't name back in the 80s and WD40 performed terribly. I bought Castrol DWF back then although WD40 is sold everywhere. I have no idea if the formulation's changed much since, but it's a prejudice I can't shake off.