Replying to WTF s912 Ti problem?

Bought some today, had them mounted on some old belanger pros. The dude only put the dins on 5, so i clicked in on the carpet at home and as soon as I flexed the nose I double ejected, so i cranked them up to 9, which is what I ride my other skis on. Then clicked back in, flexed the nose - fine, went back on the tail and the toepiece popped off? Not the whole plate, just the triangular bit. Now I can't get the screw on the top go back into the plate.. what do I do??!