I have Levelor cellular blinds in my home office. After a couple of years, they started not raising and staying horizontal. One side was lower than the other. I saw that one of the cords had slack, while the others didn't. I shortened the one that had slack about an inch, and they began hanging straight again. after about six months, I began having the same problem. I decided to re-string them. Here'sa the problem. I have now spent over two hours trying to remove them from the brackets and going back and forth to the hardware store... read full review »