3618- A1 RHS DOOR & A3 LHS, 1618- A1,A2, ~~~~~ 3618 A1 RHS DOOR & A3 LHS, 1618- A1,A2,A3 & A4 LHS DOOR, 2618- A3 RHS & A4 LHS DOORS DELAMI TED.  3618 A1 RHS/A3 LHS, #1618 A1/A2/A3 LHS replaced outer door leaf rollers. Cleaned J-rail/guide rail & no FOD was found. Door operation cyclic test, door open/close timing, door gap 63.5mm, weather strip - All checked OK. All doors were proven closed & no DIR lit up. OPS 20 raised to follow-up on the remaining doors.  Sarma/Alan/Lee PT/Kamarul 44989 TO FOLLOW UP.  1618 A4 LHS door & #2618 A3 RHS/A4 LHS door replaced outer door leaf rollers. Function check door operation & cyclic test - OK. Door open/close timing, door gap 63.5mm-64mm, weather strip - Checked OK. Cleaned J-rail/guide rail & no FOD was found. All doors were proven closed & no DIR lit up.  Sarma/Alan/Lee PT 44990