I still wouldn't be surprised if a replacement acts the same way. It's a very dynamic pedal, so if you are below the threshold of breakup you will get a clean signal. If you weren't able to get any breakup at all on EQ mode I'd be concerned, but if digging in or boosting works it could just be a combination of your playing style and the basses you use. Watching Nate Navrarro's demo of the pedal, he only really starts getting decent breakup at about 3 o'clock, and he is normally quite heavy handed (although in that demo he is playing a bit more subdued).