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		#7 | 
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			Join Date: Mar 2016 
				Location: Paris (France) 
				
				
					Posts: 428
				 
				
				
				
				
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			Thank you very much for your answer. 
		
		
		
		
		
		
		
	The uwer seems to be made from old glass bead. I had already put WD40 but I will clean it again according to your instructions.  | 
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