Shackle is my word. There's probably another word for it, but I don't know what it is. You'll see it.Never mentioned a shackle.lol Just trying to explain the feeling.I will check all these things and yes the gasket has flattened.I will open the stove and find the catch and check the sliding mechanism.Appreciate the help.
If your gasket is 100% flat under the cat frame, and the metal-metal contact is not on the bottom of the frame, but on the side of the frame, toward the back of the stove, that sounds like it might be okay. . .