so just bought my son a new loco EMD GP35 ho scale new in the box.  Was very careful with the break in period.  Now having a hard time with it.  The engine does not want to run all the wheels are on the track but it does not move or if it does we have to turn the control up and it seems like the wheels are not getting any traction?  does this make sense?  IDK what to do the boy is so upset and I am super frustrated with this issue.  Any ideas would be helpful thanks
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