I've heard rumbles about the P80 being a problematic controller - mainly cause it lacks MIDI THRU. Could someone update me on this little controversy ? I just want to use it "Local Off" to sequence MIDI tracks from a sound module (Roland SC8850) to my PC. I'm not a live performer and don't plan to use the P80's own voices / tone generator to play back or record sequences. Is the P80 still problematic as a simple, "mute" controller for this type of application ? I realize it lacks pitch bend, modulation etc.