I got mine fixed today...it was just a rock stuck inbetween the sheild and the pipe!! ****ers charged me 10 dollars just to unscrew it and take out the rock!!! Oh well at least it's not rattling anymore! Some may try this to see if it works. It surprisingly didn't look all rusted when it was raised! There was no rust actually...is that odd? I hear of peoples heat shields that are rusted and decaying and mine is still shiny and new!!