Hi just to let you know,i have used brasso metal cleaner to clear the discolouring off the plastic glass,i have also used this for polishing slight scatches on motorcycle fairing screens.If there is very slight marks,you can even use smokers toothpaste as it is a very fine abrasice.Cheers Neil.

 

nice one might try the tooth paste on my helmet viser. if it dont work it will be good for me

 

try autoglyme paint restorer-------------(like a t cut-really good) went from opaque to crystal clear

 

What did ya head lights??

I 2000 wet and dryed mine then brasso