Px feedback to staff(KTB) that car 1555train doors close with loud noise.Staff (AMK) checked ~~~~~ 1555 Pax feedback to staff(KTB) train doors close with loud noise.  Staff (AMK) checked. CE: 1555 A1 door having rubbing noise when closing n door have rubbing marks.  1555 A1 door found rubbing when doors open/close.    Added 1x shim & door cyclic test 20x - OK. Door force = 10 kgf - OK.  Jervis 44413