One of my shop techs fixed this for me. You just have to cut the piece from an old 997 style binding and then epoxy it in there. I've had it happen to another pair also. From now on I'm going to epoxy that piece in there before I ever set foot in a new pair of 916s. It's so stupid that they put such a chincy piece of plastic on an otherwise bomber set of bindings. With the epoxy in there, they'll never break off.
"I knew in an instant that the three dollars I had spent on wine would not go to waste."
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