Damn, I knew it had to be something simple.
Make sure you are on the model in which you want to change modes. Push the roller down and power on the Tx, this will put you in System Setup. Scroll down to System Settings and select mode 4. Now, keep clicking next until you get to the calibration screen. Center all of your sticks, sliders and the knob, then calibrate them. Once calibration is done, click Save. Now, click List to go back to the System Setup screen and power off your Tx.
Once the Tx is powered off (this is the trick!!!), PULL YOUR BATTERY! Yup, take the back cover off and unplug your battery. Wait 10 seconds or so, then plug it back in.
Power on your Tx like you normally do and when you see the main screen, scroll one time to the right (should bring up the monitor menu) and verify the rudder is now the aileron.
Hope this helps. Sorry about the confusion earlier.