There should be threads on that axle, which the adjusting ring spins on. There are only about 4-5 though.
The BB cups might need spacing out more. I had to space out my 68mm shell with 3 spacers, which takes it up to about 75mm.
Hope that helps!
73 mm is the ISO oversize, 68, normal, so it'll be the difference.
@Khornight2 started
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There should be threads on that axle, which the adjusting ring spins on. There are only about 4-5 though.
The BB cups might need spacing out more. I had to space out my 68mm shell with 3 spacers, which takes it up to about 75mm.
Hope that helps!