TC reported Front DT car 'A4' door did not opened. SM(BBT) confirmed train door did not opened at BB T NB. Train door did open at JUR MT with a slight delay in o pening. ~~~~~ TC reported Front DT car 'A4' door did n     Check and found A4 door wobbling during open/close. Further check found LHS outer main roller damage,c/o both main roller done.Check all reading and testing all within criteria. Door function and static test all ok. Done by Rizman/Sanip/Koh. 10/04/23