Unfortunately,
I don't have a Ground control that I could use to make the correct measurements and see how the 11r works with it. If anybody would like to donate the $499 pedal to me, I would gladly make you a set of $10 stickers in trade LOL. I might even take them and have them printed on magnetic paper to exceed your expectations. <sarcasm>Just send me an email and I'll get started on 'em <sarcasm>

Seriously, If there are enough takers and someone can get the dimensions required. I could maybe charge $10.00 for the entire set and buy the pedal. Somehow, I doubt that would work.
But an idea all the same. I think that I could make a set that many would find pretty cool.