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			#5  
			
			
			
			
			
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			Shoe box joint is how they are made from the factory.  You sure you aren't just looking at a void between the rubrail and the hull?
		 
				__________________ 1996 -19' NV Flats 115 Mercury 4-stroke 1983 -20' Wellcraft Center Console 250 XS | 
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