Thanks for all the tips! According to The Dicor Corp's United Shade video (at UnitedShade | The Dicor Corporation | Official Website
under Resources for RV owners), I have night shades in my 5.0 (as opposed to the day/night shades). I'm going to try their RV DIY video "How to Restring RV Day/Night Pleated Shades" and the Pleated Shade Restring Kit (which only uses 3 tools: a flathead screwdriver, Phillips screwdriver, and scissors) for $22.25 (or $16.89 + S&H on Amazon). After I fix my shade, I'll post about my experience.