The spoiler on my 2003 coupe had developed a mind of its own. It would go up and down at random times. No apparent leaks, but the system wouldn't hold pressure. I really didn't want to spend the big bucks to replace Porsche's electro-hydraulic curiosity. I found this well thought out kit on Ebay: http://www.ebay.com/...84.m1497.l2649. For $150 you get two threaded rods with other hardware that replaces the hydraulics in the rams that raise and lower the spoiler. Also included are well written instructions with photographs on how to do the job. The author even included his phone number, so you get help if you encounter a problem. If you are happy to have an immobile spoiler (you get to set the height) this is the way to go.