In Dualshock 3 native mode, certain controls aren't detected.

[hamanger]

I use PCSX2 with an actual PS2 controller through an adapter that utilizes the pressure-sensitive buttons, but for whatever reason L/R3 and start/select can't be set through the pad menu. Everything else works just fine, but I can't play anything that uses these controls as they aren't detected at all by PCSX2 which makes certain games much harder if impossible to play.

I know the likeliest issue is the adapter, but if I look at the raw data coming from the controller I can see values changing when I press these buttons.