Just saw this you probably have them fixed by now.
If they need restringing you can buy repair kits at your local RV dealer, and there are directions on the Internet. We just did one of ours and it came out fine.
While you have your blinds down you might consider giving them a bath. Our coach is a 1997 and the blinds were dirty. A soak in a mixture of clothes detergent and Oxiclean in the bathtub worked wonders.
Sorry I didn't see your post sooner.
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