Check to see if your scanner has a "descreening feature" If it does, use the setting for magazine print (usually 133 lpi). I work for a newspaper and we get all kinds of crap sent to us to scan, from yellow page ads to posters. It's a full time job just cleaning up bad scans. What issue/page # of NG? I may be able to scan it here on our equipment. For educational purposes, of course.