I looked back through all the posts about the D & S N scale trains and found 2 that were having the same issue I am.  The train will not run even though it is new right out of the box.  I purchased one from my local hobby shop to use with my Yard Boss set.  The track is fine, my Yard Boss works perfectly on it.  I unboxed the D & S Locomotive and Tender, placed them on the track and nothing happened.  I quickly boxed it back up, returned it to the sister hobby store (due to no additional sets at the first store) and exchanged for another new set.  I brought the second one home and am having the same issue, it won't run.  Taking hubby's advice, I took all the new track and power supply and set up a circle on my dining room table.  Still, it doesn't work.  I looked through the forum to see if others had the same problem, hoping it was something stupid like an on/off switch.  I found an answer, however I really don't understand it.  I was hoping someone here could explain it in "dumbed down" terms?  How do I apply power to the trucks while poking the commutator?  And where might I find these parts?  Here is the answer I found..."I am very happy to report  Cheesy that my loco works after all! I had it packaged up to go back to Bachmann but stopped at the hobby store in Green Bay first to purchase a different loco to get me started and the fellow said if you had it here, we could just check this one thing; so I booked out to my car and grabbed the package and we opened it up. He applied power to the trucks and spun the commutator with a small pick and off it went. He said it had probably been sitting a while and the lube grease had gotten stiff. "...Any help would be greatly appreciated.

Thanks, Carol