I just bought the RD 88 piano. I have some questions. Might there be a firmware update to ensure all the sampled sounds have the same volume level? It's really annoying that the sounds I like the most are the quietest ones yet some sounds like Clavs are more like the volume level I'd prefer to hear. Also, since the RD 88 EX has now come out, would the update from RD 88 to RD 88 EX be an extra set of sounds, leaving the originals as they were or would the update be a complete over-write of the firmware? And possibly fixing the first 'issue' I mentioned? Thanks.