I have only heard of that problem a couple of times. 
I think it's because he adds a bit more 'meat' around the hole than the book ones, Maybe it would depend on what shocks you are using. 
		
	
		
		
		
		
			
				__________________ 
				---  James ---
 
IVA passed 20 June 2017
 Flickr Album
			 
		
		
		
		
	
		
		
	
	
	 |