yep. my old Lionel stuff... the powered A unit often winds up pushing the dummy A...seemed like it got better traction..but probably just my imagination.
for my MTH, obviously the directional/lighting setup leaves me just running the A in the lead.
last Christmas was the exception - had an older MTH diesel that was binding in forward.. thanks to a member here for the repair work...but for the christmas holiday kid's play time I had to simply put the dummy in the lead and cycle the direction so i could at least run the train around the track..albeit, the primary engine was always going in reverse..course on that old set, both engines have dual motors.