The cover model does not match the case! There is no way to change it now. But I will not leave this project. There may be an update soon.
For 10 mm darts. The comments indicate that the lid does not fit well. I 'll try to change that . While I recommend, if possible, to increase the height of the lid in the slicer before printing, perhaps this will help you. But this is not a guaranteed way!
The author marked this model as their own original creation.