I now have the 15mm Rail adapter kit back from the anodizer.

These fit my FS100 compact shoulder system. It is adjustable and can be removed quickly by 1 thumb screw for compact transport. Here is a link to check them out and for ordering:

FS700 Rail Mount: Westside A V Studios WEB Store (http://www.westsideavstore.com/index.php?p=product&id=74)

And some photos: