I’ve run into a lot of strange bugs with inputs. I tried a few different methods and settled on this one. I think a lot of the issues center around the arrays being re-ordered by the engine. I was never able to figure out exactly what is going on. I know for sure alphabetical order on the input matters. I wouldn’t be surprised if the key mapping plugin doesn’t work right with secondary mapping.
Here’s the method by Mathew Wadstein I’m considering using. deathclonic brought it to my attention. https://www.youtube.com/watch?v=yNEs8kh7F0A