I need to replace the pop out knob latch which secures the top refrigerator and/or the dry storage bin.  Mine recently cracked.  I can see that it's from Southco.  On t heir web site, they have 4 different part #'s;  M1-2A-11-1, M1-2A-12-1, M1-2A-13-1, and M1-2A-15-1.  I have no idea which one to order.  Has anyone ever replaced their latch and can you provide a part #?
	
		
			
		
		
	
								
				
		