Train doors at front M1 car were not proven closed. TC recycled train doors once - ok. Staff(amk) ch ecked and confirmed no train doors abnormalities. Fault did not recur at subsequent stations. ~~~~~ Train doors at front M1 car were not proven closed (1515)   Checked all doors guide rail for FOD satis. Door operation check found 1515 A2 door with squacky sound. Found 1515 A2 RHS weather strip folded,    causing high resistance. Realigned rubber strip. Performed 10/20mm cx and door speed cx satis. Done by Hairul and Haikel. 15/12/2023.