Just a suggestion - I see your using the c5 accessory drive. 
 
The bolt that holds the power steering reservoir tank and bolts into the head - make sure you notch that bolt hole. 
 
It makes it a lot easier having to service/remove that in the future. 
 
I just experienced that pain working on my c6!
		 
		
		
		
		
		
		
			
		
		
		
		
		
	
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