My dealer said the approx. percent about 5% with clutch issue and/or oil leak.Popeye said:I also have a bad clutch slave cylinder. It is currently in the shop at Daytona. I noticed that my clutch play increased almost immediately. The friction zone engaged about one inch from the handle - barely enough to disengage the clutch. When I got home, I filled the master cylinder with fluid but I think it was too far down to make a difference since air was already introduced into the line. There was no way I could get to the other end of the line to bleed it. The service shop also told me that brake fuid had gotten on the clutch plate and would have to be replaced. I have a 2004 GT. Dealer acted like this was very unusual. How do you find out the build date?