Hey, I have a question about the EGR valve. I'm wanting to remove it and clean it out, as the last time my OBD-II was read it threw an insufficient EGR flow code. The two bolts holding it on are super tight and rusted. Is that normal? What do you suggest to remove them with? Is an adjustable wrench going to be enough? The Haynes manual did not help one bit with this one, as my EGR valve and intake manifold looks NOTHING like the Sable Vulcan they used for the pictures.