Hi, so I recently purchased a DCC Pennsylvania Railroad SD45 from Spectrum off of Ebay. It came in the mail today, and when I tested it, it wouldn't move at all below speed step 17. At speed step 17, it still goes very slowly. The headlight works, so I know that it isn't a power issue, and you can hear the motor below speedstep 17, it just doesn't run. I have tried resetting the decoder. I have tried resetting the address to the number 3 and back again, still to no avail. I did notice however that the motor was very loose. Like as in I could just lift it out if I wanted to loose. I do not think this is an issue because I secured it in place with some moutning putty, and the same issue still happened. If anyone has any knowledge of how to fix this, please let me know.