With the benefit of a good clear picture (thanks Paul) I have managed to fit the strips – sore thumbs incurred in the process!
I was refitting old strips and the plastic was fairly hard but left out in the sun they warmed sufficiently to become more easy to work with. If it’s a job you need to do or are thinking of doing and re-using your old strips, either find a way of warming the strips or it might be worth investing in new strips that are probably softer and easier to fit.
p.s roof was on the car