Today I went after this issue
"On the dark side I put the new BNSF Menards Hopper car on with one of my sets and it has issues with the trucks hitting the side ladders and derailing, also the auto coupler part that would be pulled down by an activation track section drags on the switches but just sparks and does not cause any derailing??? Not sure what to do about that. Everything is mounted to plastic?"
Took my Dremmel tool and ground just enough clearance off the back sides of the ladder so that the truck wheel supports would clear. Working good now!!