Just getting into the hobby and looking forward to a steep learning curve. I bought a 2-8-0 engine on line after building a table and positioning some track, and tried to run the engine to check it's operation. It is Bachmann item #0651, and appears to be brand new and unused, but I realize it's probably an older manufacture. The engine doesn't move, but a motor is spinning inisde it. Any suggestions about how to proceed?