Replying to Look px 12 lifter adjustment

i bought new boots this year the same size as my old boots but a different company (Rossignol to Salomon) i only had to slide the heel one notch up but now my boot wiggles back and forthe slightly. I need help on how to adjust the bindings so this stops cause i can spin clean out of my skis and its a little scary at times. Its like i need to tighten the binding vertically is there a way to do this?

Height 6'1"
Weight 160 lbs
Ability Advanced
All mountain/Park