Here's a recent upgrade of the K-Line Mikado.
It got ERR Cruise Control, a fan driven MTH smoke unit, and my Super-Chuffer board. It also received a flickering firebox upgrade. Turn off the smoke detectors, because this will surely set them off! After seeing this run, I added a hi-low switch to the smoke unit. Obviously, this is on the high setting, I use a string of diodes to damp down the heat to the smoke element on the low setting. It's not shabby at low, but clearly more impressive running full bore.
Please ignore the PRR passenger cars, I didn't have a set of NYC cars handy.
Ignore the interloper on the inside track, he was just trying to steal my thunder! As is fitting, he had a derailment in the attempt and lost power.