It was reddit.com/r/VitaPiracy/comments/qd6vlo/anyway_to_use_right_stick_in_adrenaline/ (guess the forum's previews for Reddit are broken, so I'll remove the first bit) but looks like it may not have been the solution. I checked the settings myself later. It lets you map the right stick and a few touch screen points. Still, you may have had plugins installed before you obtained your Vita, whether you ever had AutoPlugin II or not. But if you get AutoPlugin II, it gives you a catalog of well-known plugins to install, and already-installed things have a green dot. Easy install / uninstall.