Need Help Figuring Out How to Adjust x360.trigger Button Thresholds

[IronDoge]

Alright, the threshold on the L2 and R2 buttons is fairly high - it won't register a press unless its somewhere over 75% according to the Test Analogs screen. On my joypad, which has chunky increments on these inputs, this means using these buttons requires a full 100% press. Nothing less will suffice.

This is... rather painful on my fingers and the buttons are terribly inconsistent at registering a press, as you can imagine.

The solution to this for most of my software was simple - run the joypad calibration program joy.cpl. Set the min/max thresholds of the triggers (which are called the Z axis here) to something reasonable. Clean and easy.

PPSSPP.... ... ... doesn't use whatever setting this sets. Seems hardcoded, and I've put over an hour's effort into seeing if there's a way to change this. Help would be appreciated.