I have some s810 Ti's that were my race bindings, and are now on my jib skis(a thoroughly sick binding might I add), and the plate I think you're talking about isn't mandatory for the binding, because I just have separate lifters for the toe and heel pieces. also, it doesn't fucking matter that much for park, it only matters for carving, which the plate helps for.
'I can throw a twister that could make Tanner bust a nut!'
---------The Cult of the Neon One Piece Jumpsuit---------
*NORTHEAST CULT*