I have a Wayne-Dalton garage door that had a door cable jump the roller up on top. It wrapped up in one of the door rollers down below. I have an automatic opener so by the time I let the darn thing go up and down
3 or 4 times it was a pretty tangled mess around the thin spindle beside the grooved roller on top. I was going to call for service, seeing all the warnings about "DONT TRY THIS AT HOME". I got hold of a regular Lowes employee in that department (garge doors) and he steered me right. Anyone interested in how the repair went? I am impressed with the results I had with the enclosed torsion spring W-D markets.