problem with day nite shades

The best lubricant for the string is WAX the best form is Bees Wax. Although the soap will work it will add unwanted chemicals to the string like LYE or Sodium Hydroxide that's what they use to process soap. This will create havoc down the road when the strings start breaking. I found releasing the tension and waxing works well along a dab of glue to the fabric and support bracket that serves as the divider/ handle. Place the glue at the most outer edges to prevent the fabric from sliding and, causing the support bar to tilt. Good luck It Fixed mine.