During a recent winter trip to Yuma, Arizona where the wind and dust are a problem, I git a deep scratch on my screen. Before that I never had a problem, so did not have a screen protector. Now that it is there, it is creating a rough spot when I handwrite with my Jot stylus. I really don't want to abandon that stylus, so I am looking fir a way to mechanically fill the scratch. A wax polish of some sort? Any recommendations? Thanks.