i orderd foru of these, one csx, two ns, and one conorail. the cuppler on the csx one was broken when i got it but i did have spares so not a big deal. now when i put them on the track the inner axel on all of them doesnt even tuch the track. so i too them apart and found the squrae pice the cupplers set in hit the bottom of the cars not alowing them to set on the track, (you can see it in the picture). now if you take and layer electral tape and cut them into slamm squares, you can use them as spacers and put them on the bottom of the car above the metal rings the wheelset pins go, it fixes that problem. once the scrap loads got some paint they look really nice.