Hi Tim,
I'm new to the site, so sorry for taking so long to get back to you. I was not sure how to access this forum.
I have all the original parts for the head and no, it does not leak. I had my CP16 R/s, my old SRII as well as more recently my Varicam on it and it functions as a great backup head to my 2575B or a lite weight option for more remote location needs.
The Mitchell mount is an industry standard in so much that it locks to most dolly, crane and jib mounts. It will function much better than a bowl head, especially with a heavier load. Further, when performing deep tilts or quick/snap pans, the head will NOT shift.
Let me know if you are still interested and I can send some photos to your email address.
Best,
John