Ever had a slinky? ME TOO!
Ever had a slinky that gets "one"… not many… but a single tangled spot in it? When this happens, especially with a metal slinky, you know you are in trouble.
What happens next is you try to fix the one tangle and, unless you are an experienced engineer and mathematician, you are toast. You might as well just throw it away unless you are ok with risking spending multiple hours in an atrocious rage shouting expletives. I bet the inventor of the slinky is laughing in his grave. How the heck can such a simple problem be compound expand and multiply on itself in the mere seconds used to try and fix it. Befuddling! I don't know of anything that can get so wrong so fast.
Best thing to do is walk away.