Replying to HIstory of Look bindings / Problems with REI and Sports Authority

I tried getting some look bindings mounted at Sport Authority because I had a five dollar mount coupon. The tech told me he wasn't allowed to work with Look bindings and after putting up some fight that they would mount a rossi fks, which is identical, but he couldn't do Look bindings. After this debackle I take my ski and bindings over to REI who has fifteen dollar mounts. They tell me the same thing. So I'm looking for an insider to tell me what's the deal? Why can't these techs work with Look bindings without fearing for their jobs?