Hello 
 
With respect, and without intention to disturb, I have caught my attention the geometry of frizzen seems cut, so that the cock not be stopped when it hit, before opening the bread. Also, I think the latch bolt failure. It would take a good photograph of the interior of the lock and the relative position of the parts of the lock. 
 
Affectionately. Fernando K
		 
		
		
		
		
		
		
		
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