leaky seals
The reason your seal is probably leaking is because you never drive it. It's garaged and only driven in the summer. According to SVT, the car shoul never sit longer than a month w/o starting and driving it, max is 2-3 months. SVT told me the car is designed to be driven daily, although, I drive mine only on the weekends. But that's only 5 days in between, perfectly fine. Your seal are drying and cracking because the car is vever driven. Be careful, if your engine seals start leaking it will be big bucks to fix them.
My 99 cobra has 35k and is as dry as a bone, hopefully it will stay that way until I trade it in for a 2006-007 beast.
Good luck, and don't mess with it yourself, let the dealer or a professional do it. I see guys on here all the time doing their own work and having problems, unless of course you're a mechanic withh the proper tools.