This will not work on 73mm BB, only 68m BB. I had to remove all 3 of the 2.5mm spacers, so the cups go against the frame. The only external spacer I used was the wave washer that comes with the cranks on the non drive side - this worked perfect. From my XTR 970 cranks this set up gave me a narrower Q-Factor and 2mm less chain line, whiched I wanted as I'm running 2x9.
My Hive cups are 95 grams. I just saw Clav. has threaded cups for a 68mm BB and 30mm axle that are 72 grams & I'm 95% sure these would work on my set up.Probably try these when I need new BB bearings.
This post from the thread you linked sums it up pretty well.