The radio stack shows up on the MFD when you load FSX.  Like all new radios there is the current frequency shown as well as a stand by frequency that you can set up for the next leg of your trip. If you use any standard FSX airplane, all works correctly.  If you use the CS 727, you can not change the standby freq. When you try this, the current freq is changed creating havoc with the VOR heading you're currently trying to follow.  I think this happens on the B52 and 707 as well.  Anyone out there tackled this one?

Braum