OLD      VERSION      8 0 C YYYYMMDD        1    VG VERSION 20031120                                         
NEW      VERSION      8 0 C YYYYMMDD        1    VG VERSION 20040107 BETA                                    
OLD      HEADSNL      9 0 C                 5    HEAD SERIAL NUMBER, LEFT                                    
NEW      HEADSNL     12 0 C                 5    HEAD SERIAL NUMBER, LEFT                                    
OLD      HEADSNR      9 0 C                 5    HEAD SERIAL NUMBER, RIGHT                                   
NEW      HEADSNR     12 0 C                 5    HEAD SERIAL NUMBER, RIGHT