[Mikendebbie]

You may be able to get a replacement screen from Trekwood. I searched for about a minute and got to the screen shot you see below...$69 doesnt seem too bad for a screen that fits properly...as long as shipping is reasonable, i have seen lots of complaints here about the high cost of shipping that Trekwood quotes.
Kinro is owned by Lippert. You might poke around on Lipperts website and see if you can find a screen.