I am trying to revoice A MIDI file . I am using the multi record song recorder and going to the mixer pressing the channel 10 icon. and I can change the drum kit to any kit in the list except any revo drum kit...it immediately jumps out to the previous non-revo kit...I have done this in the past because I have many files that I have changed and indeed continue to play with revo kits, but for some reason I am unable to revoice.. I have tried a few different files, to no avail... interestingly, the midi files that are currently revo can be changed in and out of revo drums no problem... it is as if a bit in the midi file is preventing the change... but these are the same old midi files , not new ones. any ideas would be welcome please. Regards. John