I'm presently riding Mt. Adams, just leaving Vancouver on 517 and it STILL Lacks and NPCU, the crew decided not to bother to wye the train this afternoon so we the passengers had the pleasure of taking it for a nice long wye ride going through what felt like nearly abandoned rail yards with manually set switches before completing the wye move directly in front of the Rocky Mountaineer Station that already has a train in it. We also left the station at 5:38, 7 minutes early since customs closes at 5:30 and apparently everyone had been processed.
I road 510 up on Sunday, also aboard Mt. Adams that also lacked an NPCU, that day I know they wide the train without passengers because I saw the rear bare of an NPCU power car through the fence as I boarded my bus up to Whistler (the purpose of the trip was Spring Skiing).
I know this is an old thread, I'm intentionally bumping it to show the amount of time.