[folivier]

I have 8 sets of these in our coach. Last year Cindy replaced the cord on 1 set with Darlene and Elaines help. Well the cord on the same one broke again. Cindy and Darlene repaired it again. But while doing so we figured out why the cords are breaking. On the bottom rail there is an end cap with a brass bushing that the cord slides through as you raise or lower the shade. The brass piece is worn and has a groove that the cord is now passing through causing it to abrade and break. I plan to call Vista tomorrow and see if these end caps are available.
Since they fixed that one another one broke and the end caps are worn just like the other one.
So if you have problems check the end caps.