'B2' train doors at Rear M2 car were notproven closed. TC recycled train doors a few times but to n o avail. Staff (BBT) unable to push to close defective traindoors. Pax disembarked. After disembarkation, TC feedback a  ~~~~~ 'B2' train doors at Rear M2 car were not     #1514 found A4 door wobbly when opening & closing.Further check found RHS door leaf bracket not tighten.Check also #1514 all door no sign of FOD at guide rail.#1514-A4 door manually push/pull the door intermittenly stuck when opening and close.Tightened RHS door leaf bolt(x3)tighten.Condcut door cyclic test,10/20mm #1514 & #2514-ok.Door timing static ope/close ok.(withn criteria) Check all cars guide rail only #1513-A4 door with FOD.Remove FOD-ok.Door cyclic ok. Checked by Zulq/Saini/Asruddin. 29/01/23