Have new ES44AC Ferromex diesel and running on 060 track when getting to curves the coupler doesn't turn enough and pulls the freight cars off the track only solution I have found is put an Extended Vision caboose behind engine it's coupler arm is longer and has spring and it doesn't get pulled off of track so have to pull caboose then freight cars sent maybe tomorrow will look and see if I can Modify coupler shouldn't have to on brand new engine
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