I emailed John Blichmann and he said I have an older model (even though I bought it recently, go figure).
I was going to put a washer between the 2 pieces, but I didn't have a washer of suitable size on hand so I fabricated one using a dip-tube o-ring inside a post o-ring. Works great and I know it's food safe.
I'm not limited by the teeth now for positioning!
Pics (click an image for a larger version):
Installed view (note that the cotter pin is just inserted to hold it together, not bent like it should be)
What it looks like in the cooler
Outside view showing quick disconnects to the autosparge and to the drain valve (with temp probe inline)