Dave Smith Instruments SYNTHESIZERS

Hi all! My first post, woo hoo!

I've been searching around but haven't found any mention of my
problem, so here goes.

My brand new MEK just arrived (conveniently enough, my wife took the
kids to her parents for a birthday part for 2 days). Everything is
grand (the thing looks, sounds, and feels amazing) except I can't get
any of my sustain/damper pedals to work right.

Here's what I've tried with all 3 of my pedals (none of which I know
their normally open/closed behavior):
1. Power off MEK.
2. Plug in pedal into "sustain" jack.
3. Play a note - it sustains.
4. Press the pedal - it cuts off.
5. Navigate to the Dampler Polarity setting and change it.
6. Same pedal behavior.
7. Cycle power to the MEK.
8. Same pedal behavior.

Has anyone else had luck switching the polarity setting for their
damper pedal, specifically on an MEK?

Thanks,
-Ben.