After a visit to my local Andrew Sheret, I have come up with a solution.  For about $30, I can put an extendable PVC joint into each line.  This way I don't need to be exact with the measurements because I can extend it up to 3" in length.  I will take a picture of the joint later to put on here.  I chatted with a couple plumber friends of mine and neither had issues with these extenders leaking, so let's hope I can say the same. 
		
	
		
		
		
		
			
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				Mark...
  
290g Peninsula Display, 425g total volume.  Setup Jan 2013.
			  
		
		
		
		
	
		
		
	
	
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