Ah, how embarrassing... My first day and already made a fool of myself... Yes, the bars are at least 23" across.
While I'm making a reputation for being a hypochondriac though: I took the pad off to rotate the bars down, and am now convinced that the right side is sliiightly bent in/back. This seems to explain why the dash pad is more bunched up on the right, and is consistent with the scuffs on the front of the right lever unit.
Also, at full lock, my right hand is closer to the tank than my left. Perhaps the fork just rotates a bit further one way than the other, but...
I'll take another look later, and bring a pair of unbiased eyes.