Ok, I'm not a technician, so I don't know the correct terminology. I will write a more detailed reply, attempting to use the correct terminology when I get the time. But in simple terms – the original firmware that came installed on both the Timefactor and Modfactor worked as I would have expected (aside from the midi-exp pedal issue). The Pitchfactor, being a more recent model, does not. I updated to Timefactor to the beta firmware – it now has the same problem as the PF. So you have changed something between the release of the first two pedals and the Pitchfactor in regards to midi-implementation. It should be clear to whoever did the programming. Either way, their functionality to me has been severely limited by whatever changes were made.