I've seen IIRC quite detailed repair instructions posted on tinternet, on a forum similar to UKC, they were a copy of an article originally published in a Caravan/MH magazines a VERY long time ago! - May be worth Googling a bit to see if still to be found.
If nothing else, they prove that the flyscreens are repairable, if you can work out how, rather than a certain scrap and replace in their entirety solution!
A day of all things motorhome and campervan. The show is held both in the main indoor arena and across the grounds. Catering, hot drinks and food options are available. Easy access to the site and free parking included. Win one of five pairs of day tickets