Terry: Apparently I was slightly off on the windway schema. As pancelticpiper rightly pointed out in the Goldie soft/medium thread (linked above by Tunborough), here’s the correct lineup:
However, if I recall correctly, Colin mentioned to me a few years ago that he actually can/does make windways in between these standard ones.
FWIW, I’m very happy with my narrow-bore Goldie with 1.0 windway (very soft/easy blower).