This Luxaflex Slimline Venetian Leftthand Cord Lock fits very tightly next to the Tilter in the headrail.
These Luxaflex Venetian Cord locks can be very hard to get out.What I have found is to get a flat head screwdriver in between the front of the headrail and the Luxaflex Venetian Cord lock, where those two plastic bits come down in the picture above and lever it out. Don't worry if the Tilter comes out as well because you need that free to clip the new cord lock into the tilter before pushing both of them back into the slot in the headrail.
These Luxaflex Venetian Cord locks can be very hard to get out.What I have found is to get a flat head screwdriver in between the front of the headrail and the Luxaflex Venetian Cord lock, where those two plastic bits come down in the picture above and lever it out. Don't worry if the Tilter comes out as well because you need that free to clip the new cord lock into the tilter before pushing both of them back into the slot in the headrail.