Controller Configuration – Logitech Cordless Rumblepad 2

I’m very pleased that the Controller Configuration has been built into Krypton RC2.
I tried it and what’s there works to a large extent with a “Logitech Cordless Rumblepad 2”, but there doesn’t seem to be a configuration profile that allows one to use all the buttons.
Has anyone developed one and simply not yet had a chance to make it available?
If not, could someone comment on whether it is difficult to modify an existing profile to suit?
If modification is possible and reasonably straight forward, a pointer to a guide/documentation would be very welcome.