old git wrote:
The problem is that no matter what I set the minimum note value at, presently one thirty-second note, (is that the fabled semi-hemi-demi-quaver?), the Real Track dots just do not sound right.
1/32 are demi semi quavers.
I can't help you with the rest as I don't use GB. In Logic it would be a qustion of setting the correct display Quantise. This doesn't alter the actual timing of notes as does the actual quantise, it just affects the smallest not value that can be displayed.
So if the display quantise is set to 16, it will only show 1/16 notes and longer. 1/32 notes would indeed probably be shown as a stalk with two noteheads.
Sorry for being a few weeks late with a less than useful response.