Here is a picture of the "piston" that appears to be leaking.

http://i149.photobucket.com/albums/s50/ccogg/pto.jpg

I know the oil looks bad, I just took the top cover off the transmission today and flushed it out, then refilled it with fresh oil.

Also, here is a picture of the transmission when I had the cover off to clean it out.

http://i149.photobucket.com/albums/s50/ccogg/transmission.jpg