I am trying to freshen up the screen on my adventure, usual stone chips on the outside, and scratch marks on the inside caused by using gloves on a dirty screen.
I first tried auto glym paint restorer, a normal polish with a bit more 'bite' this made it worse and put nice 'swirl' marks on the inside.
I then out of desperation used the normal auto glym, very slowly and with repeated applications it started to clear and the scratches almost go away.
Use a very soft rag for the polishing.