Bunch of good folks at Rupp. They helped me identify them as Lees bases and even sent me a couple links. Good customer service right there!  
Lees said the rivet held a cable for the eyebolt. No slick pads.
		 
		
		
		
		
		
		
			
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				1983 V-20          capsized. . . . in the garage.
			 
		
		
		
		
		
	
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