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Power problem on Horizon Express
throwing this out there, I converted my Lego Horizon express to 9v electric and using two motors.. one to pull, one to push, but after about 5 min of running the train slows down extremely and stops, why is this? I tried to use one motor and there is no power at all to pull the full set (2 together) and use the power functions and no power at all again to pull the entire train, does not make sense, I see others running with no problem.......any help??