Tost release and chain links

Chain links are often used instead of TOST rings for ground tows behind golf carts, as they are much cheaper. I noticed today that I can easily slide the chain link out of the nose hook of my glider without pulling the release, while in other gliders I can’t. Looks like my release has slightly more play, enough for the chain link to release, but not enough for the Tost ring which seem secured thanks to its larger size and thickness. Do other had such experience? Is there a reason to be concerned?

Ramy