I haven't found any discrete codes for the Pronto yet (but I have been busy and haven't really looked yet.) I'm relying on the inventiveness of others and will check remote central on occasion.
Please let us all know if you find any ccfs.
Incidentally, I used the LEARN feature of my Pronto to substitute my 950 for my old Denon 5700 functions. For modes I'm still using the 950 remote (naturally).
But I understand what you are trying to do.