I have this PS1 subway set https://mthtrains.com/30-2122-1 that I bought from eBay that I just got around to testing. I'm having a hard time getting it running around the track. I replaced the battery, when I power it up the sound comes on and the lights light up but can't get it to move forward. I check underneath to see if the gears move freely and they don't. I tried putting some oil on it, but still haven't been able to budge them. Is this normal or did I get a turd?