Yes, #12 is indeed still there. The park opened running #7, a Porter half the size of #12. When they got #12, they picked their engine for the day depending on what the projected crowds were. (#7 can only pull four cars; #12 handled two or three times that many) Unfortunately, fourteen years of minimal maintenance on the track have made running #12 a shaky prospect; it's almost too heavy. It had gone unused for about three years when #7 had to be taken out of service for six weeks in the 2000 season for major work on the boiler.
With the 4th of July crowds approaching, we had no choice but to roll #12 out of the shed and see if she would go. It was then we discovered most of the problems---brakes, throttle, injector, sanders---and a few more along the way.
Rather than spend the money to overhaul the tracks, it seems management has decided to sell off the one engine too heavy to run on them. There is something lacking in the wisdom of an outfit with no backup engine, but there it is. Mostly, I hope #12's problems are just due to a decade of halfhearted maintenance.