Attached is a video of my MTH PS3 Railking Mikado. I've noticed that with each individual chuff, with smoke, the headlight and marker lights flash slightly. I am running conventional with MTH Z1000s (and one Z500)
Hopefully this can show up clearly in the video. I note this until the engine is running quick enough for the smoke unit to be constantly on - not the on/off/on, etc that comes with the slow speed chugging. Once the engine is running quick enough to run the smoke fan constantly, the lights stay solid. I also note this with DCS.
Unfortunately, I don't have any other marker-light equipped PS3 steamers to compare. My PS2 engine with markers does not do this. My PS3 0-6-0 switcher also has the quick flicker to the headlight with each chuff and again, evens out once the smoke is running constantly.
BTW, this is also the engine that doesn't "coast" when stopped in conventional. I've posted that issue before. Barry, have you heard anything? MTH knows that there is an issue and I was told would be issuing an update sometime early this year.
