Triumph Repair: Triumph Spitfire soft top, trim shop, triumph spitfire

Question
The windows on my soft top have gone cloudy they are not brittle however. Is there any way of cleaning them without damaging them or is it best just to get them replaced?

Answer
I have tried several things that claimed they helped but never found one that worked. Have not looked for any in the last couple of years though. Unless they have something out in the last year or so I have always had to just let a trim shop put a new window in it. If anyone would know of a product that works it would be a trim shop.