Thanks gents. Sounds like these cords in the side of the panel may well be the problem. Do these cords just run from front to back each side to give tension to the sides, or is it one long cord that runs round the whole roof assembly?
I assume that the roof has to come off the car to access these cords?
Tony
1981 TR7 FHC Cavalry Blue
1980 TR7V8 DHC Jaguar Regency Red - sadly sold!
1977 TR8 FHC EFI Factory development car Inca Yellow