TC reported Rear DT car, A2 door not proven closed. Open/close a few times - ok. Staff(CTH) checked and confirmed no abnormalties ~~~~~ TC reported Rear DT car, A2 door not pro     #3543-A2 door LHS & RHS door roller damage.Replace LHS & RHS door roller.Clean guide rail,J-rail,check no FOD to be found.10/20mm door gauge pass.Door timing open:3.2sec,close:3.0sec.Door cyclic test ok. Done by Saini/Haslan/Haikel/Koh  11/01/21