While you wait for answers, we may have found some information which could help you.
Click here for Roll Up StringHow to retension a Velux blackout blind GGL4?
How to repair a torn place in my silhouette blind?
Refixing a velux blind?
Replacing cord for high Velux window?
how can i reglue my honeycomb shades?
how can i shorten the width of my levolor vertical blinds?