I'm currently a beginner in the scanning community. While cleaning my V800, I noticed a few minor scratches on the scanner glass that were the width of a human hair. I was wondering if these scratches will be noticeable at all if I were to scan photographs at 1200 DPI. If so, what can I do to remove the scratches? Also while cleaning, I accidentally used a lenses cleaning wipe that contained isopropyl alcohol. According to one site, this could leave streaks on the scanner glass. I was wondering if this was the case, if these streaks are permanent or cleanable?