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i have 2 atlas c30-7's, and both of them were bought new, and they have bad motors. they jerk back and forth, and it gets worse with higher throttle speeds. i gutted them, re-lubed all gearing, and checked for any frayed wires or loose connections, and the wheels are clean. what is wrong? i have modified both units to CONRAIL C30-7A specs. is it the motors, or something unseen? <br /> <br /> <br /> crblues
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