Audio [Q] 3-button headset controls reversed

My 3-button headset's buttons are reversed so that the + button jumps back and the - button jumps forward.
Also, the volume function doesn't work at all. The third button works fine though (Play/Pause)
I've tried all sorts of apps (Headset button controller etc.) to fix the problem with no luck.
I want to have single-click for volume and double-click for track control.

Is there any .kl file you can configure or any other way to change how the phone interprets headset button signals?

I'm using the latest Android Revolution HD rom (v 41.0)

Any help is appreciated!