Well, I just finished performing Marty's fix and so far so good. The truck between the middle and end unit is no longer jumping the track. Before the fix, I noticed a crackling sound coming from between the units as if there were stress on the units when going through the curves. That noise has been silenced since the fix. There is also less pinching of the gaskets too.
The Turbo train made over a dozen laps around the layout with no issues. Here's hoping it will run well for a very long time.
