Replying to Salomon Sth 14 Binding Problem

So last year I had a pair of fujatives with Marker Jester Bindings, and dalbello P8 boots, had them on 10 Din setting, had no problems, really good bindings, only popped out of them on a big fall, like a wanted to.
This year i sold my fujas, and bought some liberty hazmats with salmon sth14 bindings. after a few days riding I've realised i'm coming out of my skis really easy. like much easier than a 10 din setting should. I asked the guy who fitted them but he didnt really understand (mainly because he's french, and his english  isnt great) could this be because the bindings fit salomon boots better than dalbello? i'm thinking this because my boot doesnt fit snugly against the front of the binding, like it did with the jester. I've used rossi scratch bindings before with these boots (on test skis) and they were fine, my knowledge in this area isnt that extensive. Does anyone have any ideas?