Bringing back an old topic, which was brought back once before, because I am having the same issue with some of my Lionel Husky Stack couplers. Of six cars, three have issues with the couplers staying closed. You can hear a slight click when closing the coupler, but it will open with only a very slight force.
Before I glue them shut, I'm hoping there is a solution to fix them. Seems since Feb 2016 someone should have looked at this. Any way to fix these very weak couplers?
