Its what I did to my R33 cause it had the worst yellow fever lens's.
Wet and dry 1000,1200,1500,2000 grit, used as suggested.
Sanding horizotially and dropping through the grits till I hit 2000, plenty of water and the yellow fell off before my eyes...
Then I used Kitten liquid cut and polish polishing in small circles.
My lights look farking awesome again.
thanks to the thread from here.
Love this site