Retrolink L and R analog.

I am wondering if this controllers L and R buttons are simply buttons with no analog function at all. I currently have both L, R, L analog, and R analog all set to the respective buttons. However, the 'light press' analog is never activated unless threshold is at 100. The windows USB gamepad config also only recognizes L and R as buttons with no analog range at all.

So am I stuck with the shoulder buttons being pure digital?



EDIT: I have disassembled the controller and can definitely confirm that their are analog sliders inside for both the L and R button.