My tubes are pretty scratched up so I will be preordering the brass tubes. Will the lower tube have a new serial#? Oh, and my ggts is fairly old (6xx), will the new brass tubes fit it?  Also, where can I get a battery spring, I got my ggts second hand and the spring is missing. I'm currently using a button spring temporarily.
	
		
			
		
		
	
			
			
			
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