I added the razo pedal, and removed it after a day lol. I've tried a bunch of different settings, higher up on base pedal, lower down on base pedal, no spacers, small spacers, large spacers, spacers on top, spacers on bottom, and extension in various settings too.
The rugged and many-edged surface breaks the deal for me. Not smooth on and off throttle, its travel is non-linear because the edge catches my shoes and is leveraged to move faster for the first 20% travel. Also keeps catching the tread in my shoes.
I'm just going to go back to stock pedals lol. I've gotten better at heeltoeing in them anyways.