Front M2 car A1 door was not proven closed. TC recycled train doors thrice - ok. Staff(BGB) checked and confirmed no train doors abnormalities. Fault did not re cur at subsequent stations. ~~~~~ 2514 car A1 door was not proven closed. TC recycled train doors thrice - ok. Staff(BGB) checked and confirmed no train doors abnormalities. Fault did not recur at subsequent stations.  N A1 door function check ok. No FOD. Found B4 door closing cusion too fast cause wobly and pounce back. Adjusted door close speed and cusion function ok. 10/20mm test ok. Door static test ok. Done by: Jack,koh Date:16/10/2023