hi,
you can, and I think it should be better, to change the NAV switch to NavModeDual.I cannot understand why the VC10 developpers have installed two INSs and only the NavModeSingle switch.Having only the single NAV switch if an INS#1 failure occurs and you have to shut down the INS#1 the navigation must be conducted looking at INS#2 and manually transferring the INS#2 navigation data to the panel instruments.To confirm what I'm saying during the flight, switch Off the INS#1.You'll be able to ascertain that the InsNavModeSingle switch will drop to Off and it isn't possible to switch it On anymore and you have to proceed manually helping yourself looking at INS#2 data.
Gianfranco

Hi,

How did your reconfigure your panel? I do have NavModeDual in my panel.cfg, and neither of my switches is working.  

This is how it appears in my cfg. file.
Code:

gauge78=F:\Program Files\Microsoft Games\Flight Simulator 9\civa\INS!NavModeDual,  991,4,60,47 

In the VC10 model the navmode switch is so tiny as to be almost invisible. So I moved it to the top of the main panel amd increased its size. You need to do something similar.

PS The switches won't work until you set the INS on STBY or align.
vololiberista