I recently ordered an open box demo Nano Small Stone from Sweetwater. It worked fine, except that with the "Color" switch in the down position, when I turned the rate all the way up, the phasing effect would disappear. (This didn't happen with the Color switch in the up position.) I told Sweetwater about this, and they graciously allowed me to return the pedal for an exchange. The replacement pedal appears to be new, and Sweetwater didn't charge me any extra, which was very nice of them. However, unfortunately the new pedal exhibits the same problem as the previous one. Before I return this Nano Small Stone for yet another one, I'd like to know: Is this "normal"? Have other Nano Small Stone owners observed this same behavior? Thanks in advance!