Anniversary 4-6-0 Power Loss

[locobud]

When my Annie 4-6-0 tries to make it all the way around the layout, running light, but stalls at the far end, it's time for serious repair.  I think the motor gearing has slipped out of alignment, or just worn out, based on the whirring sound I hear  :-\Is this something that will require a trip back to Bachmann or should I just order new parts?  If the latter, which parts are most likely suspect?
If I opt to let the "Bachman" do this job, would I need to get a return authorization first?

[Loco Bill Canelos]

If the motor is whirring and the loco won't go, it likely the axle gear in the gearbox.  I would recommend contacting service and check out you options.