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			I tried the mod with a 1/2" bit. The largest I have. It did make a little bit of an improvement. Impressed for 2 mins worth of work.  
 
What do you think would work better. Expanding the hole with a larger bit or maybe drilling another couple more holes in the pipe? Or would both accomplish the same task?
		 
		
		
		
		
		
		
		
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