I’d recommend [Userscript]: Double-Check (Version 2.x) over the Override script.
@kracktastic Those two scripts are really your only option, because as WaniKani states in the Feedback category:
Have an idea for WaniKani? Something you think that would make it better? Please post it in here. Also please try to make sure someone else didn’t already post the same feedback.
Some things probably not worth posting about:
- WaniKani is too slow
- Let me undo a wrong answer (because I typed a typo, or really any reason at all).