Triggers don't work for Xbox 360 pads on 64-bit Raspberry Pi 5 RetroPie

[Jesuszilla]

I bought a Raspberry Pi 5 and am trying to configure my Retro Bit Saturn pad which shows up as Xbox 360. For some reason, the triggers (aka buttons Z and C on this pad) do not register at all. I installed the xpad driver and I did not have this issue on the Pi 4 32-bit RetroPie image so I'm wondering what the issue is. I tried searching but I personally couldn't find anything for this specific issue, only stuff pertaining to xboxdrv which I didn't install.

EDIT: There's no /etc/modprobe.d/xpad.conf file on my Pi 5 like there is on my Pi 4. Should I just make a file with the same contents as on my Pi 4, or is there more to this that I have to do to fix it manually?

EDIT2: Adding a /etc/modprobe.d/xpad.conf with the following line and rebooting solved my issue:
options xpad triggers_to_buttons=1

[mitu]

The triggers_to_buttons is no longer applied automatically to the xpad driver , since it breaks the Xbox controllers mappings in SDL and subsequently any applications that use the SDL's GameController subsystem. Existing installs are not affected, but new installations will not get this configuration automatically, though you can manually add it and will stay configured.

EDIT: how did you try to map the Z/C buttons - to which gamepad inputs ?