Does anyone know if the flash modules for the Motif XF and the MOFX are interchangeable? In other words, are they the same part--for either the 1Gb or 512Mb versions--for both keyboards? I haven't found anything that is definitive stating that the FL1024M or FL512M is compatible with the MOFX series. Even though, they seem to be the only flash modules Yamaha offers. Thanks!