I have a Mth Rail King RS3 loco with PS2 that I bought from Trainz 4 or 5 yrs ago that was used. When I received it would run on the track a few feet then shut down. Move it an inch or so it would power back up then do the same thing. I sent it back to Trainz and they "fixed" it and it ran fine a short time and started to do the same thing again just occasionally at first then gradually got worse until it was back to it's old self. This is a problem that's more than just cleaning the rollers. I was never able to speak with the tech that fixed it. Does anyone have any ideas as to what may be wrong with it ? It is not the track as you can at any time replace it with another loco and they run fine. Thanks for any input.
Dave