what piano sounds = using the Yamaha grand rockSorry, I don't know this Performance
Utility - Initialize all data
By the way: I was forced to fully reset the MODX8 to factory settings because it hat another strange behavior after playing it with MIDI-cable from an KAWAI MP11.This sounds like it is caused by the MODX being in MIDI I/O Mode = Multi, and therefore the connection via MIDI only is addressing a portion of the MODX Performance.
Only a few notes createtd sound, then a few keys were ignored (no sound), then nexte few keys created sound, then a few keys were ignored (no sound) .... and so on - regardless if I was playing on the KAWAI MP11 (via MIDI) or direct on the MODX8 keyboard.
OK - I changed the velocity setting as you suggested but that made it even worse. (changed it back to soft) Any resonance I had completely disappeared. the notes disappeared as soon as you played them. I'll go and attempt to check the FX settings to see if they are on or off when I get home from my gig today.
I still believe the audition phrases are recorded with some secret settings that Yamaha don't want the competition to know about.