Train doors at Rear M1 car were not proven closed. Opened and closed several times, to no avail. Sta ff (OTP) assisted to isolate Rear M1 car B4 door in closed p osition. ~~~~~ Train doors at Rear M1 car were not prov   Fault unable to duplicate in depot. Rubbing marks can be observed on 1507 B4 door. 1507 B4 door was wobbling during door close operation with slight    rubbing noise Found 1507 B4 LHS both door rollers damaged - replaced Trimmed RHS door weather strip After rectification, door speed satis. Door cyclic test ok, DIR able to extinguish. Door static test ok. Door push/pull test within criteria. Conducted 10/20mm gauge - passed. Checked door manifold/actuator for leaks and operation -satis No signs of FOD was found along guide rails & J-rails. N.A SANKAR/AZLI/FAIZAL/19.03.23