Remapping Shield Portable

What’s the proper way of remapping keys and having them stick? I’m using the latest nightly and while I can sort of remap them through the retroarch menu, the mapping resets when reopening the app. Is it because auto controller detection is overwriting my mapping? If I disable autodetection, retro arch doesn’t seem to notice my controller. Also, I can’t map the triggers right because pressing L or R trigger maps the trigger to multiple keys. Mist be detecting the pressure as multiple key presses.

I basically just want to map Start and Select to the back and start buttons of the Shield.

Unfortunately, hardware buttons for Back and Menu can’t be mapped in nighties :frowning: I have to map left or right stick for RGUI toggling.