Hopefully when I get mine I also have stiff couplers... It will save me gluing them shut to prevent accidental opening at the public layouts...
I do zero switching, so any coupler that smells like trouble gets glued. I have had to many accidental openings, with the latest being the Lionel Polar Express cars opening going up the mountain at our public layout.
I have some maple saplings in the woods behind my house that are begging to be cut & chained down to some flat cars...