Does anyone know when the coupling compatibility problems with older versions started to surface? Obviously the milk cars were just retooled, so now for them.
I know some have reported the issues with the latest steel sided reefers from 2020 so hopefully not before then, but they have had the thumbtack trucks from 2017 onward. What about the hoppers? It looks like they were changed to the previous thumbtack design at the same time in 2017. The earlier thumbtack versions of these trucks hopefully at least couple okay with older products. The artwork stills shows the thumbtacks on the 2020 2 bay hoppers but I assume they will be produced without the thumbtack trucks. I'm just trying to get a feel for how widespread it is.