And the exhaust guy told me it was pebbles in between the shields and cat.  I got under there and watched him whack it with the rubber mallet and it seemed to make sense.  Am i nuts or is that possible?  
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					Originally Posted by tuanle16
					
				 
				thanks.  maybe i'll try that.  i put the back on some ramps again and banged around.  definitely not the heat shield.  but possibly the exhaust/cats.  when i hit those, i do hear a slight rattle like a pepple stuck in them or something. but i couldn't isolate exactly where it was coming from.  frustrating. 
			
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