Hi jon,
I was hoping that you had received a ccf file for this and had figured out the discrete power on/off codes, as I am looking for them as well.
I found the following file in the files area here, but it doesn't have the discretes yet either. I hope you can find the time to look at it and help all us Momitsu owners by figuring out the codes.
[Link: remotecentral.com]Thanks.
Karna.
BTW: I am an MX500 owner too.