Hi Marty. Thanks for your response. I have a Lionel NYC E-7 (6-24579). It was in storage for the past 5 years. When I put it back on thr track all seemed well at first but then I realized that is not running smoothly but instead is moving in a sort of halting jerky motion where it speeds up a little and slows down a little in a regular pattern. It does this with or without Odyssey on and with or without smoke on. I tried turning the powered wheels by hand and the one on the front truck is harder to turn than the one in the rear. I applied a small amout of Lionel lubricant to the gears but it did not help.
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