Fitting CPU coolers for LGA775 boards is a right pain in the rear-end. Both times I have had to fit coolers I have had to apply more force than I feel comfortable with and get scared that the motherboard is going to break. I know it's suppose to be easy with those twisty pin things but it's always so fiddly trying to get them to work. 
Socket 478 was a doddle in comparision.
	
		
			
		
		
	
				
			Socket 478 was a doddle in comparision.
 
	 
  
 
		 
 
		 
 
		 
 
		
 
 
		 
 
		 
	
 
  I'll be following in your footsteps soon hopefully
 I'll be following in your footsteps soon hopefully  moving from my ACF7 to a Tuniq Tower
 moving from my ACF7 to a Tuniq Tower