I had a couple in my series 2.
Tricky dicky sorted me out and fitted for me because I am too scared about stuff like that.
In the dark
In the rain
Taking my old screen out with big crack complete
Replacing with "new" screen
15 mins
Only thing he said was if you can get a new rubber it would make it easier to remove the old one and you cant just slice the rubber to remove the screen.. he used 2 screw drivers from the inside to remove
Jake