I received the  o ring from ESU today. However Im pretty sure they did not read the email I sent to them. ESU shipped me the o ring which seals the collection cup to the skimmer body, I am not complaining because now I have a spare.  
But my skimmer still leaks at the knob.  I will figure something out. 
		
	
		
		
		
		
			
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				If it is just us, 
It seems like an awful waste of space.
			 
		
		
		
		
	
		
		
	
	
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