I was out there in 2004 and both engines were wore out and would hardly run. I watched as the engine would die on the grade and passengers got out to push the train up & over.
Last I had heard, both locos were dismantled to build one good engine, so sounds like a "Kit" to me.
A warning though, the kid who is the new chief engineer has burned some suppliers whom I know personally and they will not deal with Tiny Town at this time. Perhaps the very reason they need HELP!