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					Originally Posted by  hauss
					 
				 
				I understand what you are saying, but a improperly machined hole, will let air into the system. I disassembled my slave and was unable to see any wear on the piston. Not sure of bore diameter but has a adjustable pin on the speedway witch I like. Do you think master cylinder could be allowing air into the system? 
			
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 That's mechanically impossible, if it could suck air in, it will definitely leak fluid under pressure.
Master cylinders can suck air, depending on type/configuration.
Gary