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I have not been able to solve a problem with my SD 40-2's, be it Kato or Athearn. On my broad and level curves, (they used to be banked until I tried to fix this problem) the lead trucks occasionally ride over the outside rails, and no I don't speed. I have other 6 axle engines that work fine such as AC44's. If the SD40's are in the middle or end of a consist, they work fine. It is only the lead trucks that tend to want to ride over the outside rail. My curves are generous at about 36 inches. I also use NWSL wheel sets and all are properly gauged, including the track. So what's the buzz, tell me what's a happening.
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