I have begun to get a rattle up in the moonroof when its closed. I kept hearing a rattle but couldn't tell where it was coming from until I finally put my ear up around the moonroof area. I've checked all the visible screws and plastic guards both opened and closed. I can't find the problem. Anyone had something like this? It is a fairly distinct sound of something loose, and it didn't used to be there. I have noticed that I can push up on the moonroof, and it does move around a quarter to a half an inch up and down. Is this normal? I've silicone sprayed the gasket around the moonroof but everything is still the same with the rattle.