Hello, we've set up our "Philadelphia Flyer" O-gauge loop and run the train around for a few days, but now the train gets half way around and then quits. We've bent all the center connectors to tighten that connection, and we cleaned the center track with 1200 grit sandpaper and wiped it with TP. But the train still wont run all the way around. Any suggestions? Thanks, Zephyr (age 10 1/2)