Right great chatting chaps, but back to the topic of spotting...
288-275M are currently sitting in Melbourne yard, pans up.
I think you're a year behind on Hitachi set coupling. In about April last year (I think), 288M was separated from 275M and recoupled with 294M. And then later in the year it was recoupled with 273M.
275M-279M is at Macaulay, probably the one you saw, 288M-273M is at Craigieburn, and is the set which will be used for the tour.