Thanks for the note - i'll give it a try. 
 
Unfortunately most of the noise is coming from the pump.  It's a loud banging type noise - it sounds like the magnetic cylinder is banging against the sides of the chamber or something.  It was quiet on day 1 - but it's almost intollerable. 
 
Is this a defective model, or is there some trick i'm missing to keep it in "tune"? 
		
	
		
		
		
		
		
	
		
		
	
	
	 |