This problem can be overcome by setting up the RB Displays using $Options.seq and by saving the settings in File > Windows Setup. I also set up the default unused tracks as Midi see Preferences > General at the bottom of the display.

Select New and set up all displays as required and in particular set up the Mixer Expression dials as maximum 127. Save this setup as $Options.seq and also via File > Windows Setup overwriting the DEFAULT.RMS file and maybe, as belt and bracers, save another as Favorite.rms