Ford Edge Vista roof maintenance

i presume it is electrical , have you checked the fuse if ok in the hand book will be a section saying how to open manually.do this very carefully as if roof not been opened for a while the control wires to and from motor can be corroded if you get roof slightly open spray something like WD 40 along the runners at each side leave to soak for a few mins and repeat process when roof can be wound open/shut smoothly try the motor again ,i know this is a bit labourious but beter than a blown motor or damaged mechanisn

sounds like some one tried to pry open the moon roof.
is the roof opening and closing smoothly with out binding?
your repair looks correct, be sure to keep any debris out of the roof
guide tracks.

I assume your flashing is lead and not synthetic. There is no definitive life span on lead but can be affected by where your live, as it will degrade at different rates due to natural and assisted errosion from industry pollution etc.
What is the exact problem ???