I have a new (to me) BMW Tank Bag for my R1200RT. The map cover is yellowing probably due to the effects of UV. I can still read maps through it, but would like to clear it up if possible. I have tried Nexus plastic cleaner, hydrogen peroxide and some other stuff without any change. Suggestions about what to try (including: "Fuhgeddaboutit!") gratefully received.
TIA - John Gamel