How do I get the manifold cover off so that I can change the other three spark plugs on my 2004 dodge stratus rt 3.0L V6 engine. I've removed all the screws that the haynes repair manual said to remove but it still does not come off, Do I have to remove anything else before removing the manifold cover...Please this woman needs some Help. I've even removed two screws from the back their seems to be another one their but being that I was outside all day working on it I gave up, can someone please help me.