I'd suggest taking your setup to your local shop and having a ski tech adjust it. That's your safest bet.
The issue itself is likely your binding's forward pressure adjustment. Most bindings don't have adjustable toe wings including the ones posted above. Forward pressure is essentially how tight your bindings grip your boot. Think if your boot and bindings as an ice cube and your fingers. If you grip the ice cube too loosely it will slide out of your fingers, and too tight it will shoot out of your fingers. Correct forward pressure is really the perfect grip.