It goes a lot faster now that the print filter doesn't involve piping converted PDFs through this: "gs -q -dBATCH -dPARANOIDSAFER -dNOPAUSE%B%A%&&Z -sOutputFile=- - | perl -p -e 'if (! $did) { s/\xc0.\xf8\x26/\x&&c0%E\xf8\x26/ && $did++; }'"