Just curious if anyone had some input on my chimney cleaning plans. I have a 4" chimney that has 2 elbows and had a hard time getting the rope through them to maneuver the brush through. I would like to leave a steel cable down the chimney for easier cleaning next year. Need to know if this would cause any issue? The chimney would still be sealed just would be able to attach the brush to it and pull it through easier. Thanks for the help.