NSEU
A little caution with respect to the "Master FMC". Been out of the loop for a while, but my addled memory tells me that the "Master" function is fixed and NOT dependent on the FMC Master position. That switch only dictates which FMC will source displays rather than information. Afraid my manuals are many miles away in storage but it might be worth your while having a grub around in the 'heavy' books.