I ran my set on our clubs modular portable layout at a train show for about two hours or so. Not the entire time mind you. The two hours happened over the length of the show which was about 6 hours.
Anyway at first it ran perfectly. I'm using MTH smoke fluid which is what I use in all my Flyonel engines.
Hour two saw the smoke level diminish and it appeared to be "wafting" out of the stack more than being fan-forced.
The recommended # of fluid drops was being used.
My guess is the smoke fan has stopped.
Any help is welcome.
Mark