Replying to Would this binding setup work?

I have a pair of some Salomon Z12s laying around and until I get money for good pow ski bindings I was gonna toss them on my 122 waist pow skis.  The brakes are only like 80 or 90mm so I was gonna buy some 115mm (the widest salomon makes) brakes.  I called the shop to see if they could mount them and the guy said I need new bindings because the Z12s can't handle a brake that wide.

Is he full of shit?  I don't know why salomon would make a 115 brake if the binding couldn't handle it.  Should I just order the brakes and get them mounted somewhere else?