I have a Bachmann Spectrum (Item #83804) HO USRA Light 2-10-2 w/Sound. I have had it for a few years but I hardly run it at all. Today I put in on my layout for a quick run and it started to run fine but then "stopped" for no apparent reason. It still has all the sounds and the light works, but it won't run in forward or reverse. I disconnected the "Plug Ins" from the Tender that connect to the rear of the Locomotive and cleaned them with electronics contact cleaner in case there was some "Dirt" on the points but it still won't run. Does anyone have any suggestions? The Engine is an older one but is just like new. As I said I do not run it much at all. Any help would be appreciated.
Thanks! 

I have a Spectrum HO Baldwin 2-8-0. I noticed that the headlight stopped working. It's not an engine that run everyday only once in a while, so I doubt it would be "burned"out.  Does anyone have any suggestions on how to check the light, or what to look for first before taking the engine apart and replacing the headlamp? Maybe there is something to clean first like the contact points on the plug? Ant advice would be appreciated.

I was thinking of buying a Williams Madison Passenger Car Set, but noticed that they indicate in the specificatons: Navigates 0-31 curves. I was wondering if they would also navigate on 0-27 curves without having a problem?