Williams/ Bachmann shows two universal type couplers 293-E001
Check that your coupler doesn't have a screw plate where it mounts to the truck.
That would be the FA / NW2 type: https://estore.bachmanntrains....8durggva5b1o87meedl1
Or maybe here, https://www.ebay.com/itm/Willi...d:g:AkgAAOSww05dara6
https://www.ebay.com/itm/5-O-W...1:g:-R4AAOSwDPhc9zyE