I realize that I'm a few days late on this thread, but have to say that restringing day/night shades is NOT a difficult procedure, just a bit time consuming. Anyone with even a slight amount of mechanical ability and common sense can do it in about an hour and a half for the first one and 30-40 minutes or less for any that follow. I just did one of mine yesterday that had been sitting since last summer. You do need a long table and a needle with a big eye along with a screw driver and a pair of pliers for disassembly. The material for this one was provided free by the manufacturer, but I also have a large spool of even better string purchased from an EBay seller for a very few dollars and used on a couple of others that had failed. Since I'm a tightwad, as well as a mechanic, I can't see the time then the expense of sending a blind to someone for such an easy job. The hardest part of the job - trying to get it off the wall then back on without my sometimes salty language shocking the neighbors??? ???