Its appears to be a common problem on this style of Ford key, that the key loop brakes. I didn't want to split the key and print the whole handle to fit the key and transponder. I also had a problem with the other model blocking the key from being fully inserted. I've designed this cover to be well form fitting and the top can be filled with hot glue for a more solid feel and rigidity.
The author remixed this model.
More form fitting, better hand feel.