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My one year old Sigma-tec vacuum pump went out the other day, blew a hole in  
		
	
		
		
		
		
		
	
		 
		
	
	
	the case. This unit was supposed to be good for 2000 hours or five years. The company is going to warrantee it with a standard pump. They said they made the changes and have the other units on back order waiting for certification. I guess they are not so good. I was lucky it happened at an airport where a friend let me fly is V tail bonanza home. How lucky is that.  | 
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