On Saturday I took out my On30 Davenport and was surprised when it didn't move. It ran fine the last time it was out, and it probably has only 2 hours of running time on it total. So I took it apart and it turned out to be the infamous Bachmann cracked gear problem.
At one point Bachmann had a replacement program, so I contacted them to see if there was anything they could still do. I hope they have a better quality gear, since the stock one is very thin.
As an aside, the Davenport looks awesome on the Hinshaw Valley.