Reason And My Radium 49, Mapping controllers Options

[Man-oh-man]

Hi,

Brand new to the site, hoping I am posting in the right section. My problem is this: Reason in conjuction w/ my m-audio radium 49 keyboard have preset controls (ex. master volume, etc.) I am trying to define other things (like pitch) to free, or unused controller knobs. I have looked in both manuals to no avail, and have probably lost five pounds from sweating so much. Forgive my ineptituded with some of the terminology - if you need me to be more explicit, I will try. TIA,
Man oh man

[dten]

If anyone out there has tips, please jump in. I'm very interested in this because I was planning to purchase the Radium 49 to use with Reason, specifically so I could assign the extra sliders and knobs to Reason sliders and knobs for more real-time synth control.

But if the extra controls aren't assignable within Reason, I might as well save $50 and get a Keystation 49e !