The drivers do not move freely, so the gears are probably still intact.  I did disconnect and reconnect the two pin connection to the tender, but that did not help.  I have contacted Bachmann and am awaiting a response.  As this is the first time I have contacted them about an issue, how is their response time and helpfulness?

I just purchased the 2-10-0 Russian Decapod (with sound).  Engine ran fine for about 10 minutes, then stopped.  Now, sounds working as they should, but wheels do not turn.  The engine does not move.  Any thoughts?