This is a small annoyance, but can someone tell me how to get my 700c to control the last bus so I can line up my hardware buses with the software buses in X3 producer?  For example, my master fader controls the first bus, and the bus faders on the 700c start at bus 2 in Sonar.  I would like my first bus on the 700c to control the first bus in Sonar, and have the master fader on the 700c control the last bus in sonar (which I have set as the master volume for my project)

Theoretical proposal (I do not have the device):
1) When 8 strips are controlling tracks, you should still see color box for one bus in the track/console view. That is WAI for master fader. You can try to drag it with mouse.
2) When 8 strips are controlling buses, try to press SHIFT+RECORD ARM for some bus. Master fader should be moved there.
 
I repeat, that is just a theory... But it cost you nothing to try